Loved it. The driver picked us up when we waved down the trolley - not at a regular stop. We asked him to tell us about the town and he was awesome at pointing out historical things and good places to shop or eat.
This thing is free! And the driver again dropped us off at a non-regular stop when we finally found our car. This is a real treat and a free find... a must-do when you're in Scottsdale.