The Bob-omb Car is a car traveling the streets of Mushroom City in Mario Kart: Double Dash!!, Mushroom Bridge from Mario Kart: Double Dash!!, and Moonview Highway in Mario Kart Wii. They also appear in the Mario Kart Wii Competitions, September 2008 Comp. 1 on Skyscraper and May 2009 Comp. 1 at sunset Luigi Circuit.
They are huge Bob-ombs with wheels instead of feet. If they are hit, they will act like a typical Bob-omb and make a huge explosion. They can be used as more effective, makeshift weapons, like using a green shell to make a bigger impact on those in the immediate area. Along with the Mushroom Cars, the Bob-omb Car strangely didn't return in the Mario Kart DS version of Mushroom Bridge.