Lithium acts as anodes:
Lithium <~~ Li+ ~~> silicon nanowires
or carbon nanotubes or graphenes act as cathodes,
and your car can go 1000 km by one charging.
The same roof surface can collect both warmth and
electricity perhaps meanwhile or at different times
and in different places on the roof. Basically, every
ray of sunshine is to be collected from the roof of
either electricity or heat.
Electric cars and mopeds keep air clean and noiseless
in towns, and will perhaps increase our lifetime. You
can produce electricity for the general network too.
Nanolayer keeps solar cells clean. TH