[mikeyd]

I don't understand why there is even any debate about which energy to use.
Solar energy is completely FREE, Completely clean, inexhaustible, easily collected, easily stored, requires no raw materials.
Approximately 15,000 times more solar energy hits the earth than mankind currently produces/uses using all other methods of generation.
The amount of Solar energy being generated/collected is doubling every 2 years and is just 8 doublings away from fully meeting current needs (i.e. potentially 16 years)
It's an absolute no brainer that when presented with a choice of inexpensive clean solar energy and expensive dirty energy - consumers and producers will choose solar.
The most likely future for personal transport in 20 years time will be a mixture of (solar produced) hydrogen - fuelling fuel cells in vehicles that need a longer range and pure Tesla style battery vehicles for local commuting.
It's happening already, and the technology is catching up very quickly.