Which new car energy technology would you bet your money on ?

Its a terribly exciting time for alternative car energy and many technologies are fighting it out for domination in the future. Some are very experimental while others are already available. The list is not small making the debate quite complicated. Which of the following would you bet your money on? And why? Or perhaps you have one not listed below:

Electric Hybrids & Car batteries
Plug-in Electric Hybrids
All Electric
Bio Fuels
Liquid Hydrogen
Hyrdogen Fuel Cells
Ultra-capacitors
Coal based synthetic or Coal-to-liquid