Complete details at their site...
http://www.google.org/recharge
http://www.google.org/recharge/experiment
A few charts:
Electricity usage for plug-in vehicles: Ford Escape Plug-In 133.2 Wh/mi, Toyota Prius Plug-in 139.6 Wh/mi
Electricity usage for plug-in vehicles: Ford Escape Plug-In 133.2 Wh/mi, Toyota Prius Plug-in 139.6 Wh/mi
Electricity usage for plug-in vehicles: Ford Escape Plug-In 133.2 Wh/mi, Toyota Prius Plug-in 139.6 Wh/mi
Electricity usage for plug-in vehicles: Ford Escape Plug-In 133.2 Wh/mi, Toyota Prius Plug-in 139.6 Wh/mi