we put a portion of each on the credit card to earn points. It was our intent to put the entire amount for each on the credit card, but the dealers limited the max amount to $2,000 on one & $3,000 on the other. Sometimes, the dealers offer incentives to finance a portion of the car -- we did this with our Ford last year. We took advantage of the savings, made three payments (we had to make a minimum of three payments) & then paid it off.
Just like Judy said she is doing, we are paying our daughter's tuition off monthly using the credit card & getting at least some rewards from it (besides getting our daughter out of the house ).
Steve B