well why dont u go to all those workshop and say that to their face??? ahahaha and have you ever sanded down a car before? rofl i bet you 10 minutes of sanding and you will be sick of it! ahaha and plus it usually takes more than 2 days to paint... u sand it all during the day prima it at night spray it on the next afternoon and let it dry for another night, buff and polish next day, and thats working flat out and missing some spots like extra coat on prima/clear rebuff etc etc... think about it, and again thats working flat out.