Yeah, I seem to remember that it was lobbying by farmers that had something to do with it. Like, farmers who used light trucks on their farms wanted to be able to drive to down in those trucks too without needing to get a special license. But, that might be wrong. Either way, it smells like corruption to me. They should either be cars and have to meet all the standards applied to cars, or be trucks and meet the standards applied to trucks. Allowing them to avoid the fuel efficiency standards and safety standards applied to cars, while also avoiding the special driver’s license needed for trucks is unfair (or even dangerous) to everyone else on the road.