Many, many years ago, I was leading a test team from Sweden to north of Italy, where we were going to perform high speed tests on a test mule. Coming through Brenner Pass, we hit the border- no one there - everybody at lunch. Since we had a Carnet pass, with all our spares and tools, we had to get stamps from customs, that we did bring in those items.
We had to wait two hours. When customs arrived, it was a two minute affair.