Well surely a wheelchair with mounted machine guns is the next best thing? (gamesradar.com)
Each character has a unique special ability to go with their personal vehicle, all of which are equipped with a roof mounted machine gun. (xblafans.com)
Things like mounted machine guns, rocket launchers, land mines and so on will be at your disposal for you to use to take out opponents you're racing against. (droidgamers.com)