The current mariokart is fun,but the newer version, dm_mariokart3_v1 is a lot more fun. it has the blimp,secrets,disco,the nuke,speed pads,exploding gas stations...
for anyone wanting to take a look:
http://tf2.gamebanana.com/maps/175164
for anyone wanting to take a look:
http://tf2.gamebanana.com/maps/175164