The 2010 Toyota Prius , due this spring , will have an optional solar panel on its roof . `` Solar panels really need a lot of area , '' he said . The panel will power a cooling system without help from the engine . Comment: But it 's a long way from the new Prius to a solar-powered car , experts say .
The 2010 Toyota Prius , due this spring , will have an optional solar panel on its roof . The panel will power a cooling system without help from the engine . Comment: But it 's a long way from the new Prius to a solar-powered car , experts say .