On my last German business trip, I saw an unusual licence plate on the highway.It was a small blue licence plate with EURO written on it. Initially I believed that these were personalised plates until I jokingly asked my German co-workers. "Is this the amount of money the driver has on his bank account?".
Although they could not agree either where that licence plate came from (The Germans have black & white licence plates) one believed that this was an air traffic controller.
Is this true and if so why do European traffic controllers have different plates? Do they enjoy certain privileges like diplomats?