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A Bob-omb Car, also known as a Bomb-car, is a vehicle resembling a Bob-omb found in Mario Kart: Double Dash!! and Mario Kart Wii. It is found in only three courses: Mushroom Bridge, Mushroom City, and Moonview Highway. This variety of car is only found driving on the main streets, not on shortcuts like the rest of the vehicles. In Mario Kart Wii, they have a wind-up key on the back like actual Bob-ombs.
Bob-omb Cars have also appeared in the Mario Kart Wii competitions. The competitions that they appeared in included September 2008 and May 2009's first competitions.
The effects of hitting a Bob-omb Car has the same effect as getting blown up by either a Bob-omb or a Spiny Shell. Hitting the car with an item such as a Yoshi Egg, Green Shell, Red Shell, Bowser Shell, Star, Bullet Bill, Mega Mushroom, Chain Chomp, or Fireballs will also cause the Bob-omb Car to explode. Despite having a lit fuse, a Bob-omb Car never explodes on its own.
Once a Bob-omb Car explodes, a new one will respawn onto the road. In Mario Kart: Double Dash!!, they appeared from certain hidden passages on certain racecourses, while in Mario Kart Wii, they respawn in the location where they were blown up. On the Mushroom Bridge pipe shortcut, the Bob-omb Car will come out of the entrance, when someone hits one of the existing bombs. In Mushroom City, the Bob-omb Car comes out of the alleyway on the left when players go down the hill and onto the left when someone hits one of the existing bombs on the lower level, and in the "Do Not Enter" alleyway on the upper level. If the player attempts to block the Bob-omb car from coming out multiple times, the Bob-omb car will reprogram itself to come out in an area that will evade the player, assuming they do not move their kart. The Bob-omb Car in Double Dash!! is also invincible from blowing up within the first three seconds of its respawn.