The type of work I do I have to drive and a for me a tank of gas lasts anywhere from 1 week to 3 weeks depending on how much out of town work I have to do. The sad part is only one of the companies I work for gives any kind of gas money. So I have cut down of the work I do out of town. We did recently purchase a more fuel efficient car for me for work, but the bigger reason was it's also a more useful work car. My new work car is a used Nissan Versa. My other car (yes kept it) is a Chevrolet Monte Carlo SS. My husband drives a Ford Ranger that he gets just over a week out of a tank of gas. We live way too far for him to even attempt to bike to work and there's really no public transportation at all. Although he is considering if they allow it to park near a bike trail on base and bike the rest of the way to work and then after work bike back to the truck as that would cut down on some of the driving distance although it won't cut down on sitting in traffic trying to get off base. Once he's off base it's not a bad drive home.