Have you seen the Penn & Teller show Bullshit on Showtime? (you can find it on youtube) they did an entire episode on Disabilities and those parking placards.

The really infuriating thing is that you can evidently get one if you cannot operate a calculator or cell phone. WTF????!?!??

Add to this that most disabled people want to be treated the same as everyone else... and then there are those that are disabled that want to be treated as special... just confuses the entire situation.