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8
votes
0answers
5k views

Does shifting an AT into neutral at red lights save gas?

In some U.S. jurisdictions, it is technically illegal to put a car in neutral gear while waiting at a red light (of course a stick-shift can have the clutch in, but while on the road the gear shift ...
2
votes
1answer
3k views

Can a Renault Megane drive 1700 km with 1 tank?

source See the above advert which claims that Renault Megane can cover 1700km with one tank. According to this link the Megane model has a fuel tank capacity of 60 Liters. Can the Megane cover ...
7
votes
2answers
653 views

Can turbines on the front of cars ever pay off? [closed]

This news article is proving to be quite controversial here. Basically it's an electric car with a turbine bolted onto the front. On the face of it sticking a turbine on the front is going to increase ...
14
votes
1answer
2k views

Do gas pods improve fuel efficiency?

I ran into this claim today about detachable car fins, and was wondering if there is any validity to it: about a five percent reduction in drag and corresponding five percent boost in fuel ...