Huh......how exactly does that work? If a disabled person with permanent disabled license plates drives themselves to a business and parks themselves in a handicapped parking spot, how can they remain in the vehicle if they have to go inside a building and do business? What if someone else drove the handicapped person to the business and dropped them off, but you, as the driver of the vehicle, are picking them up? If I am picking my wife up at the hospital after she has been admitted for 2 weeks, we have a permanent handicapped license plate and she arrived at the hospital 2 weeks earlier by ambulance? I would say the state or local law enforcement has no legal authority to discriminate against the vehicle that is registered as a permanently disabled persons vehicle. They also cannot ask you what your disability is. I am sure the ADA would agree, also.