A former acquaintance of mine did something like that - his truck needed (IIRC) new brakes, so he traded it in on a new truck. I buy beaters and drive them till the wheels fall off. Right now there are no decent beaters (thanks to Cash-for-Clunkers) so I may end up with a payment if the current beater croaks. I'm packratting extra cash to make the best downpayment I can, though.
Hey Nina:
I haven’t noticed a shortage of ‘dave cars’ in this area.
I just checked autotrader.com and found over 250 vehicles within 50 miles of my house under 6K.
I drive beaters, too. But have a problem parting with them because a repair here and there is still less than buying another car or making a car payment.
Good luck!