One of the episodes of Top Gear (Series 18, Episode 1), where they're testing some supercars in Italy, involves them being stopped by the police officers.
The characters feared speeding; turns out, they were stopped for working on a Sunday without a permit! (Only in Italy!)
Is it true that you need some kind of a special permit to work on a Sunday in Italy?
P.S. Prompted by the comment in Do you need to obey an obstructed traffic sign?