Most dealerships won't allow you to put an entire car on it but they'll allow some.
Oh yes they will.
When I was dating Lucy about 20 years ago I saw her Visa bill and looked at it. The balance due was $28k with a minimum payment of 200 hundred. She was paying the minimum.
Me: What is this?
Lucy: I bought a new Mitsubichi Eclipse.
Me: You put it on a card?
Me: This is at 18% interest.
Lucy: So what?
Me: It will take you 50 years to pay it off.
Lucy: What can I do?
I took her to a bank and got her a conventional loan to pay off the credit card and repay the loan at 6%.
We got married a year later. She decided to let me handle the finances.