Bowser's Koopa Clown Car from Paper Mario: The Thousand-Year Door.
The Koopa Clown Car is a large cockpit that Bowser uses as transportation. Bowser Jr. also has his own version of the Clown Car, called the Junior Clown Car. Bowser uses the Clown Car during the events of Paper Mario and Paper Mario: The Thousand-Year Door, and Bowser Jr. uses the Junior Clown Car in Paper Mario: Sticker Star. The Koopa Clown Car also makes a cameo appearance in Paper Mario: Color Splash during the end credits.