I really don't recommend it. My regular driver charges $100 from STI to Sosua. He is safe, reliable, wifi, and has beers for the ride. I saw uber was charging around $40, so I went the cheap route. But like 3 drivers cancelled on me because they did not want to take that long ride. I finally got one to take me by saying I will give him a tip. But here is the thing...the route Uber quoted $40 for is not a real route or road most drivers take, so it was really $60, and with the tip $70. Plus this guy was driving like a maniac, and I am use to NYC taxi drivers. So i did all that to save $30. So i guess what I am saying is sometimes it is good not to be penny wise and pound foolish.