This Super Mario Bros. t-shirt shows Bowser riding in his Koopa Clown Car in Super Mario World.
The first appearance of the Koopa Clown Car was in Super Mario World. In the Valley of Bowser, Bowser can be seen flying around his castle in the car. After making his way through Bowser’s Castle and onto the rooftop of it, Mario proceeds to battle Bowser, who rides around in the Koopa Clown Car. Attacking Mario by dropping Big Steelies and Mechakoopas on him, Bowser can be injured only by having a jumped-on Mechakoopa thrown at him when he sticks his head out of the Koopa Clown Car.
For any fan of the critically acclaimed video game, this Bowser Super Mario World T-Shirt is a must have!