Re:$500 billion? (Score 1)

Err nothing, just stop driving such huge ones with such inefficient engines. Here in the UK we have pickups that are 4 wheel drive do up to 100mph and can get 40+ mpg. Seem to work fine for most of the farmers and tradesmen round here and in most of Europe. A small car would be expected to get 50+ mpg or even 60+ mpg these days if its a diesel.