More exciting than the sheetmetal is what's underneath. The Atkinson-cycle four-cylinder will increase in displacement from 1.5 to 1.8 liters. That should help with long climbs in the hills and other situations where the battery pack is out of the loop. Toyota's way ahead of everyone else with their Hybrid Synergy Drive's software and calibration, and they intend to stay there. Changes to the HSD system along with new battery technology are rumored to bump city mileage to 80mpg. Solar panels in the roof for passive recharging as well as plug-in options are also being considered. We're curious how Toyota intends to nearly double the city mileage number, especially in light of the new EPA guidelines coming for 2008. Series Hybrid, perhaps? I guess we'll have to wait and see; rest assured that execution will be fastidious.