Maguire's Cleaner Wax for eight bucks comes out pretty damned good. Add another four bucks and pick up some light polishing compound for stubbborn dirt. Donate an old clean cotton tee-shirt to the cause and you're set for $12. The four hours of time you'll save will give you plenty of time to drive it, and the $30 bucks you could have otherwise spent on products can pay for the gas.