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automobile, mainly used for transporting people For questions also about other types of vehicles or about transport in general use the [vehicle] or [transport] tags respectively.

6
votes
1answer
128 views

To what extent (if any) are electric vehicle batteries recyclable?

Are there any existing procedures for the recycling of electric vehicle car batteries, and if so what are they? In particular I'm interested in those used in the Volkswagen E-Golf, though general ...
4
votes
0answers
71 views

Carbon footprint of CNG vs. Diesel as a vehicle fuel

What is the benefit, in terms of carbon footprint, of replacing a diesel fueled vehicle with an identical one with a CNG engine? I'm not convinced I can simply take the carbon intensities of these ...
4
votes
1answer
766 views

What are the carbon emissions from the manufacture of the hybrid components of a Prius?

For simplicity, I will assume that the manufacture of a Prius is essentially the same process as that of a non-hybrid ICE, plus the extra environmental impact required for the hybrid components (...
8
votes
1answer
136 views

Does putting an automatic car in neutral when stopped help save petrol?

In Australia, most cars are automatic, and most people stay on "drive" while braking when stopped at a red light (i.e. if they weren't breaking, the car would drive forward). I was wondering if ...
7
votes
3answers
410 views

What measures could be taken to decrease the air pollution in a big city?

I live in Madrid, where like in most big cities there is a high level of air pollution, especially due to the traffic. The levels of pollution reached the maximum allowable level a couple of months ...
-1
votes
1answer
93 views

Why is the private car still around in the US: do our elected officials know more than we do? [closed]

Depending on whom you trust, sort of, up to two thirds of all the oil we consume in the U.S. is burned in our engines. If you added the section of the infrastructure that directly supports ...
10
votes
4answers
193 views

Why are electrical cars encouraged but is electrical heating discouraged?

Electrical cars are very much promoted for a sustainable future, because they do not rely (directly) on fossil fuels. In the meantime, most of the electricity is produced with fossil fuels, such that ...
2
votes
2answers
206 views

How feasible would a gas-powered electric-engine based car be?

Would an electric motorized vehicle work if there was a small gas-powered generator to power it instead of batteries? EDIT: The original Chevy Volt was going to have a gas generator to charge the ...
7
votes
2answers
3k views

Impact on environment: a million horses vs a million cars

Would commuting on a horse be more eco-friendly? What if there were millions of people did that? Would millions of horses be better than millions of cars?
4
votes
2answers
4k views

Can alloy wheels (for a car) pay for themselves through fuel savings?

Magnesium alloy wheels (aka mag wheels) are desirable to car enthusiasts due to an increase in performance, but with reduced weight there would also be a fuel saving. Obviously prices and fuel ...
2
votes
2answers
254 views

Less energy consumption when we stop using fossil fuels?

What's the best way to find out how much less energy we would use if we would quit fossil fuel usage altogether? What would be the percentage entailed? I know it's easy to find out with electrical ...
7
votes
2answers
85 views

Curbing non-exhaust (non-tailpipe) transport emissions of particulates

Small particulate matter (PM10, PM2.5) is a nasty pollutant that is prevalent in a lot of cities. Some of these emissions come from exhausts (tailpipes); regulation has spurred on technological ...
6
votes
1answer
127 views

documented research on best practice for encouraging behaviour change towards more sustainable transport?

Cars have large overheads in terms of energy, materials, physical space requirements, accident casualties, and local & global pollution. But, particularly in anglophone countries, few ...
12
votes
2answers
157 views

What is the environmental impact of replacing a vehicle?

I'm currently driving a Suzuki SX4 2008. It gets (supposedly) 30 MPG (9.4 l/100km) on highways, though I suspect it's much lower now because of the beating I have given the poor car and lack of ...
9
votes
1answer
123 views

Does it matter where I charge my device?

I have a number of small devices that can be charged in my car (using a charger that plugs into the car's electrical system and is powered by the car's gasoline engine) or my home (using electricity ...
10
votes
3answers
448 views

What has a lesser carbon footprint? Continue to drive my current car until it is no longer useful or to buy a new car?

I have 2003 Honda Accord. It gets ~20 MPG CITY (8.5 km/liter). I'm trying to figure out if it is more sustainable in the long run to: continue to drive the Accord until it dies (it's still in great ...
7
votes
1answer
177 views

How efficient is it to use an electric car as storage for the energetic overload generated during sun hours (peaks) by solar panels?

I guess that the question is quite self-explanatory. I am hoping to invest in a solar panel soon, but I am a little worried about it getting inefficient once government subsidies run out and the ...
2
votes
1answer
79 views

Is there a formula for weighing ethical vs sustainable considerations when making a purchase decision?

Due to an accident our family needs to replace our car of 10 years. Normally we would make it last longer. The car needs to be big enough to transport the entire family. The only options meeting our ...
15
votes
2answers
4k views

When does using a car's start-stop system become more economical?

In this question it was asked how economic it is to turn your car's engine off when waiting for a traffic light. In the accepted answer it is said that it becomes more economical to turn it off if you ...
6
votes
2answers
4k views

Can chip tuning make a car more fuel-effective?

I'm considering to have my car engine chip tuned. I'd like to increase the fuel efficiency of the engine. Increasing the power of the engine would be only a secondary advantage of doing so. Most of ...
6
votes
2answers
2k views

Are electric cars more efficient than gas-powered car (when considering entire energy cycle)? [duplicate]

For the last couple weeks, I've been hearing a lot of talk surrounding Tesla and "the electric car". What I'm curious of is whether or not it is more efficient to actually power an electric car (the ...
7
votes
3answers
165 views

Sustainablity of Telecommuting

I'm looking for sources that can give some reasoned arguments about Telecommuting in sustainablity terms - how much of an energy costs in there to working at home compared with commuting X miles in Y ...
35
votes
8answers
25k views

How effective is turning a car's engine off while standing at a traffic light?

I know some countries enforce having cars automatically shut down the engine when stopping at a traffic light. How much resources are really saved by this process? Does the car need to be ...
8
votes
3answers
144 views

Most sustainable way to freshen air?

Looking for some alternatives for air fresheners. I have been looking at various alternatives such as coffee grounds (possibly in a muslin bag), and the like. What works here? I would rather get ...
31
votes
3answers
3k views

Are electric cars as environmentally friendly as we think they are?

Given the fact that the average lifetime for a car battery is 3 years and all of the batteries end up at a landfill at the end of their lifetime, how sustainable are electric cars in providing a ...
13
votes
3answers
188 views

What to do with an old vehicle?

I have a 1975 Ford F-350. It gets 6 miles per gallon. I don't use it any more. If it was fuel-efficient, I think I should get it in to someone else's driveway, so it can reduce the demand on new ...
20
votes
4answers
634 views

How to drive to be the most fuel efficient

I saw a poster at a thruway rest stop once that said something along the lines of accelerating quickly is worse for fuel efficiency and carbon emission than idling for several hours (I don't remember ...
12
votes
3answers
277 views

Older biodiesel vehicle or newer but used hybrid, which is actually more sustainable?

I've heard a lot of back and forth on this issue, but when purchasing our next vehicle which is actually the better way to go? For us, we cannot go fully electric at this point due to drive times, ...
7
votes
2answers
2k views

Is my car more sustainable with or without an EGR?

I drive a 2003 Volkswagen Jetta with a 1.9 liter turbo-diesel engine. I often get well over 50mpg on the high way, and I love the fact that I have such a fuel-efficient car that is also fun to drive. ...
21
votes
1answer
1k views

How to determine whether hybrid cars are really more sustainable than traditional cars?

I purchased a Prius many years ago, but many of my friends have put forth claims that the batteries are very toxic and thus I may in fact be creating more harm than good in using a hybrid and that ...