i think it is possible because the credit card issuer is only after of the card usage and every time you make a card usage or spend something using the card, it will instantly give you cash back or travel rewards points.

i think the auto loan you got wont matter as long as the credit you have used from the credit card is paid off. the transaction of the loan and you personally doesn't involve the credit card issuer.

Can I purchase a car/big ticket item to get cash back rewards?
I would like to purchase a car worth $25,000 and would like to get travel rewards or cash back rewards for it..

I would then try to get the auto loan dealer to lend me the money so I can pay off the credit card...

Is this possible?