The new 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 . One company also offers a roof - mounted solar panel for current Prius ##es . But it 's a long way from the 2010 Prius to a solar-powered car , experts told CNN . But it 's a long way from the new Prius to a solar - powered car , they say .
The new 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 . One company also offers a roof - mounted solar panel for current Prius ##es . But it 's a long way from the new Prius to a solar - powered car , they say .