A lot of older cars had excellent MPG figures but actually polluted more than current cars, especially diesels. Also, cars have largely gotten bigger and heavier, which hurts efficiency.
> Also, cars have largely gotten bigger and heavier
... In the US/Canada. This is for the most part a self-contained cultural problem.
SUVs/trucks numbers are a small percentage of the vehicles on the road elsewhere in the world, mostly because there is no space for them in the road/city infrastructure in most other places.
... In the US/Canada. This is for the most part a self-contained cultural problem.
SUVs/trucks numbers are a small percentage of the vehicles on the road elsewhere in the world, mostly because there is no space for them in the road/city infrastructure in most other places.