Easily the best experience on our recent trip to Italy was our Vespa tour of Rome. We chose the self-drive option -- my husband drove and I rode on the back. Our very knowledgeable and fun guide led on his own Vespa. We had very limited time in Rome and this was a great way to see a lot of the city. Our guide had a tablet where he could show detailed information and context for all of the ancient sites. You can quickly move about the city on a Vespa (and if you've been to Rome you know how crazy traffic can be), park just about anywhere and cover a lot of ground. Other drivers are very respectful of scooters and motorcycles -- it's much safe than it might appear. If you've never been this is great way to get a strong sense of the city. Definitely recommended.