What comes after the Prius?

According to this from today's Times, Toyota is planning a seriously greener future. As one of the few vehicle manufacturers actually making any real money, they have a substantial pot to invest, and a good chunk of that pot is going into a greener future.

"Toyota will spend its fortune developing single-seat hybrid vehicles, fuel cells, next-generation batteries, bio-fuels and the commercialisation of humanoid helper robots."

Ooooh. I wonder if they're planning to let the robot drive for you?