A studio for selling Scratch cars.
Change the cars' appearance a little or a lot, make a story for it, etc.
Basically like this studio https://scratch.mit.edu/studios/3636607/
but with cars drawn in Scratch.
Feel free to use terrible grammar and spelling. The best way to get natural looking bad spelling is to type really fast and not correct any mistakes.
Get cars to use from these people (they're all great.)