My husband and I visited San Francisco in December 2015 and we pre-booked our GoCar experience. It was one of the best things we did in the area. I have recommended this trip to many other visitors personally since our trip. The Go-Car is basically a motorcycle with a go-cart body on it. We were a very tight fit, but it was a blast!! The car is open air, so dress in layers and have a scarf and gloves handy. We did our trip in early December and we are from the Northeast, so the mid-50's weather was balmy for us! However, you do generate a wind flying down the streets of San Francisco at 25 mph.!! The guided tour is great and very informative. If you decide to take a side tour, stop along the way or take a wrong turn, she (the gps voice) is there to steer you in the right direction. I must caution, this trip is not for the faint of heart. On some streets in the city there are trucks and buses and cars flying past you and you feel very vulnerable, but no mishaps at all for us. In fact, I think people went out of their way to avoid getting too close for safety sake. Make sure you add a little extra time onto your trip to allow for stops and not feeling rushed through the sightseeing tour. This was a wonderful experience and I apologize to the owners for not writing sooner. But, I have recommended it many time over and we would do it again - taking the other tour route - the next time we visit. Great idea and super fun! We are in our mid 50's and not small people either. Lots of laughs and a very unique experience!