Hahaha!!... The screen name might be Negative but I most certainly am not... =)
I used to work in a production plant with LOTS of class 4 lasers around... So you would expect it to be like a constant rave party going on up in there... But Squeadlies hit the nail on the head... Even if the laser was in the visible light spectrum (like a laser pointer is) you'd need to line your rim with prisms to refract the light out for people to see it... And even then, they are not good to stare at... I personally think this speaks very highly of your imagination, but I still have to say it's probably just one of those things that's good in theory but probably not as good in practice...
Squeadlies pointed out some excellent alternatives though to give you a similar effect than what you were originally looking for man.... either way... Sounds like your bike has some interesting and unique upgrades in store for it... Don't forget to take pics and share!!