My sister-in-law, who lives in CA, suggested we go drive "go carts" through the streets of San Francisco. I thought she was a little crazy. But then we looked at the website videos, and thought it sounded fun.
The six of us took 3 cars through San Francisco, down Lombard Street, over to the Golden Gate bridge and Chrissy Park. Our boys are 13 and 16, and their cousin is 14, so this was really so much fun for them!
The navigation system is excellent. If you can drive a car, you can do this. People were considerate as we drove through the city streets, and knew we were trying to stay together as a group. It was safer than you'd imagine. Yes, you're driving through traffic, but it was mid-day on a weekday, so really not dangerous. Helmets are a little heavy, but fine.
We stopped and took pictures all along the way, and really loved this experience! Unforgettable.