Google has just announced the Recharge project. They are converting some of their own fleet of Prius and other hybrid cars to be “plug-in hybrids”, this means that the car can be plugged in to mains power to charge it’s batteries and petrol will only be used as a fuel of last resort. If a car is mostly used for short trips then the petrol use is dramatically reduced – but the car still has the 1000Km range that a full tank of petrol provides!
Google is also going to invest $10,000,000 in companies that develop technologies related to hybrid vehicles. If you have some ideas for new technological developments related to power saving then you might want to check out what Google is doing.