How to Cut Your Gas Bill in Half

Gasoline prices have been rising fast following unrest throughout the Mideast. In late February, the average U.S. pump price hit $3.19 for a gallon, while certain markets are nearing $4. The political instability in Libya, Egypt and other key nations in the oil supply chain highlights one of the clearest reasons for investing in renewable and alternative energy supplies, including electric cars. In the longterm, shrinking supplies, increasing demand and (possibly) new climate change regulations promise, ultimately, to drive oil prices higher.

Here are five^* road-tested ways to save money on gas. Of course saving money isn't the only goal: the more gas we save, the less pollution we create, and the less beholden we are to those who control the oil supply.

^* Plus one bonus tip (no extra charge).