I agree, but battery powered cars will be old news by 2040. Hydrogen powered internal combustion engines will be the rage. The technology is in it's infancy now, but there are several start-ups working on it and conversion kits for some engines already available (mostly those driving industrial generators).

http://www.cleangreenengines.com/ban...enewableenerg/

It's a gamble but you never know and it's worth throwing in a few hundred and see where it goes: HYGE