Here are someways that done by a few people to save their gas, and thus save some money and environment. Some use biodiesel from used vegetable oils. Others use electric cars and one man in this video invented some device that could reduce gas consumptions up to 65 percents. Not quite sure what the device name, why not watch it yourself in this video.
The oil price is getting higher and higher. Yes, we all need other source of energy. Sometimes creativity could make innovative solutions. Bye. :)