Has anyone painted their car with rollers

I can imagine it must be alot of sanding/buffing im not a painter and have only sprayed a few projects nothing special. My tractor was rolled/brushed probley back in the 50's/60's looks perfect in pictures or from 10ft but up close needs to be wet sanded,. Id like to see a roll on job in person.

Do the people that use the roller still use an automotive paint?? Seems like it would use alot of paint to roll but i have only rolled walls/ceilings.