After repairing the rearview mirror, I went to find it on Friday and settled the repair cost. A few minutes later, when I opened the envelope containing the receipt, I did not return the register card, but only the receipt for the repair fee. Immediately I stopped the way and called, but no one answered. The problem was closed on Saturdays and Sundays, so I was worried. If I'm driving without a register card and I'm caught by the police, it might happen that I have to go to a quart with a ticket. Luckily, it took me 25 minutes to drop off at the body shop's office on Monday, three days later, to find the register card. Even if you said, you must return the driver's most important register card when you leave the vehicle, so you will not drive in this discomfort and fear.