Pure electric cars and plug-in hybrids are just now testing the waters in limited numbers and are yet to be ready for prime time.

FORBES: California Orders Automakers To Sell More Plug-In and Fuel-Cell Cars

Google is testing a fleet of plug-in hybrids and software that would turn them into load-balancing tools for utilities flooded with variable power from wind and solar generators.

FORBES: DOE's $30 Billion Man Speaks

Genetic testing has been carried out to try to find further hybrids among the population there.

CNN: Lonesome George, last of the Pinta Island tortoises, dies