Thank god, the developers behind Mad Trax aren't boring us to death with some silly story to justify the fact that a few loons race around and shoot at each other. Instead we just accept the fact that they (and we) do.
The idea for the game is simple. As in most racers, you've got a series of different vehicles at your disposal each with it's own unique characteristics. You've got a few opponents to race against (be they computer controlled or a friend in split screen mode, sadly there's no network support) and a host of tracks for you to race around on. First to cross the finish line wins.
In addition to just racing as we mentioned there's also the odd power-up or two for you to pickup along the way. There is the standard stuff like speed boost (nitro if you will), rockets to fire at your opponents and shields. The physics for the cars are pretty OK. They actually seem to handle pretty realistically for this type of game, still though they are nowhere near actually driving (thank god).