Apparently Uber is illegal in Italy. We didn't know that. Fortunately, it only cost us 10 euros.

We returned our rental car at the train station on arriving in Rome. Sixt wasn't set up well to process returns and it was obvious it was going to take awhile. There were four in our party, no need for all of us to be delayed and we were going to have to take two cars on to the hotel anyway. Two of us stood in a lengthy taxi ride where we saw a sign that there was a 6000 euro fine for taking Uber. The taxi was just 10 euros and we were delivered promptly and efficiently to our central Rome hotel. My husband and niece remained behind to check in the car. Not knowing about the sign I saw and knowing he didn't want to get in the lengthy taxi line, he called Uber. One arrived at the side entrance to the station where he was. He was charged 20 euros to come to the same hotel. We're used to Uber being much more affordable than a taxi. It's not in Rome - and it's illegal. That was the one and only time we used Uber. (Mostly we walked because we were so central.)