Robby,
When I bought my new car just about 2 years ago, I put about $4000 on my credit card for that reason ~ to reap the rewards. I had the cash to back it up, and paid the downpayment off a month and a half later when the bill came, so I earned another month of interest on my money in ING. Good setup. I suggest it if you are wise with your cards & cash.
To share some good news: I paid off my 5-year loan in 23 months! I just paid off the car in full last week ~ nothing like getting a zero balance letter from the bank. And the title is on the way.
I worked so hard to do that because I want my only debt to be that of my home.
Good luck, and congrats on getting a new car!!!