<prompt> Human: I realize buying a brand new car is generally a bad idea unless youre loaded, but how about a used car?Like many, I dont like the feeling or idea of owing anybody anything, but sometimes sacrifices must be made for comfort.Paying for a car in cash would leave me with maybe a notch above an old-beater. I dont have many other bills, so there is a bit of leeway.Is there any rule against financing a usedcertified pre-owned vehicle worth more than the amount of money sitting in your checking account? This is assuming a steady income, and not more than 15-25 of income is spent on said car.  <response>: 25 of income is a lot on a vehicle. 