There are two reasons I would never put neon on my car:
1.) Anyone I've ever seen locally use neon doesn't have a car to be proud of. Those who do have cars to be proud of put their money into other mods. Recently I have seen some cars on the internet that do have neon and are sweet cars, so I'm slowly changing my mind. I'm still a big fan of more subtle aesthetic mods, so it may be a while before I make a 180.
2.) It's the most easy-to-see cop attractor you can buy in this town. 5% tinted windows run a close second. To give you an idea of the law enforcment mentality here, there was a series of billboards run by the Milwaukee County Sheriff's department that said "Loud music in cars leads to other more violent crimes."
Yes, I'm a criminal because I have a stereo with >200W of power. Friggin' morons