Cars are a red herring. Even gasoline and diesel car aren't really contributing that much to world pollution compared to the real culprits, such as ocean liners and huge cargo ships. These ships alone pollute more than all the cars on Earth.

What do you think about going after the things that are actually harmful, instead of following a red herring? I mean, sure, cars should of course be dealt with also, but if you really want to lower carbon emissions fast, then shouldn't we go for the big fish first?