Which vehicle is best for these expensive gas prices?

Depends on your tastes, but I just bought a 400cc scooter. I commute to work 5 days a week and ride for pleasure, all for about a gallon of gas per week. Can't beat it. I purchased a 2006 Honda Accord Hybrid and it averages 38-40 mpg highway driving and about 35 mpg in the city. A good ten-speed bicycle will get you around for no gasoline.