The idea is simple: the dimples in a golf ball are there to make it roll faster, have less drag, and stay on target. For the same reason, Skinzwraps Inc. came up with the FastSkinz MPG Plus vehicle wrap.
They also claim it will improve your fuel economy by about 20%. The wrap is easily implemented and a low cost solution. At the same time, since you are already wrapping your car, you could use it for advertising too pay for installation. It might actually be a good idea for companies to offer wrap installation for free in exchange for baring their ads. Way to go!