I think that they are very good because they don't consume fuel but yeah elctrecity, and the bad point of these cars are that of something broke up like a string of a cable it doesn't gonna work again I think that, actually, I don't know if I am wrong but they need a lot of electricity to work, and I don't know if they have the same potential like a regular car I think they don't. But when the mechanichs and the designers change them to be better they(the cars) will be with more demand.