do i have to use hobby spray paint

[blueb8llz]

i needa paint a mt body for a lst. i normally buy them cans at the hobby store. but they just enough for a stadium truck size body.
my question is, can i just buy normal spray paint such as krylon indoor/outdoor. it says can be use on wood, metal, wicker, glass, ceramic, masonry, paper and fabric.
this big can only costed me 3 bucks. if i buy the hobby cans, i would need two and theyre bout $6 each.

i have a feeling that the paint would just peel off or wont stick too well since its not polycarbonite/lexan paint.