Put me down with all those who say buy it for straight cash!
Look at right now, your car is totaled and you still have to make payments on it, what sense does that make? Be in debt to no man.
You don't want to pay interest on something that depreciates. Plus overall it's cheaper to not make payments.
Use this car loan calculator
http://www.edmunds.com/apps/calc/CalculatorControllerGoing bare bones here for this example: buy a car for 10k with nothing down and no other fees, no sales tax, no title, just straight 10k, using car payments over 60 months with 6.95% APR. Overall you'd pay $11,866.2 for a 10k car (just take the monthly payment times the number of months to figure out what you'd be paying overall). I don't know about you, but I can do alot with that extra $1,866.20 I'd be paying in interest. Buy straight cash.