rustoleum on cars

come on people!! We have "PROS" saying it cant be done to 1st timers with excellent results. i've painted cars with spray cans (not recommended) of course I used Walmart cheepo paint, Tractor paint (had JD green, IH yellow, FORD white and mixed every thing together and sprayed it on my Toyota pu. mint green, lasted 5 years till I got tired of it. Then used Western paint Porsche red on same truck weathered badly after 2 years. Now I am going to paint my 93 Dakota with Rustoleum flat black and then get the grandkids to help camo it  with spray bombs,brushes, whatever. Just remember lifes short, HAVE FUN