"Start Your Engines (Beta Mix) - Mario Kart DS" is a high quality rip of the beta mix of "Start Your Engines" from Mario Kart DS.
Jokes[]
The melody has been changed to the iRobot Roomba 694 model startup jingle. The countdown timer is repeated six times as a sound effect of a tray being inserted plays at 0:03, followed by a whirring sound at 0:08.