How we cut the cost of gas by two-thirds

We have found a way around the rising cost of gas. We don't normally drive a car, although we own two, but we do go places on two separate motorcycles. Today I parked mine and opted to ride behind Jimmy thus saving us two thirds of the gas we normally consume on a ride. One flaw with this arrangement though is that Jimmy now has to listen to my music too, as I conveniently put my music on his i*Pod. Don't worry, we take turns with the music.