First up are electric cars. An electric car is an automobile that is propelled by one or more electric motors, using electrical energy stored in batteries or another energy storage device. The energy crises of the 1970s and 80s brought a short-lived interest in electric cars, but in the mid-2000s a renewed interest in the production of electric cars took place, due mainly to concerns about rapidly increasing oil prices and the need to reduce greenhouse gas emissions. As of June 2012, the world's top-selling highway-capable all-electric cars are the Nissan Leaf, with more than 30,000 units sold worldwide and the Mitsubishi i-MiEV, with global deliveries of 20,000 vehicles,
Electric cars have several benefits compared to conventional internal combustion engine automobiles, including a significant reduction of local air pollution, as they have no tailpipe, and therefore do not emit harmful tailpipe pollutants less dependence on foreign oil
Next is the hybrid. A hybrid vehicle is a vehicle that uses two or more distinct power sources to move the vehicle. Most hybrids use a combination of a regular car engine and an electric motor. With hybrid cars you have the option to either drive on gas or you can select the electric mode. Built with lightweight materials, these cars are very compact in size.
1The engine is built to be very fuel efficient.