The car manufacturer's CEO has revealed his company has teamed up with game developer Studio MDHR to bring the run and gun platformer to the Model 3, Model S and Model X.
Speaking on the 'Ride the Lightning' podcast, he said: "It's a cool game. It's insanely difficult, it's sadistically difficult. It's a twisted plot.
"It's dark. It looks like some cute little Disney thing and you're like, 'This plot is very dark.' "
Drivers - parked cars - will only be able to use title's Inkwell Isle One segment due to storage limitations, and only with a wired US controller.
'Cuphead' first launched as a Microsoft exclusive on Xbox One and PC two years ago, and it was released on Nintendo Switch in April this year.
The animation style is deliberately in line with the Fleischer and Disney work in the 1930s, with gamers set up against a range of increasingly intense and difficult bosses.
In addition to 'Cuphead', Musk also said a "dune buggy" driving game is being tested for Tesla's catalogue, which has largely featured simple Atari titles.