I ride an old electric skateboard from Metro-Board. I got it in 2009 or 2010 when I lived in Portland, Oregon (where the owner/creator makes them). Used to ride it all over the city to do errands, taking mainly the side streets. A lot of fun, except during the phase where we were testing the software that controlled the bluetooth (it is an old Wii controller that syncs to it).
Originally, the software was programmed to immediately apply the regenerative braking system if communication ever went down between the Wii and the board, so the board wouldn't cruise away uncontrolled. Unfortunately, the biggest factor for loss of communication between controller and board besides distance, was the "noise" from the motor when it was being driven hard -- for example, bombing down a hill. The first time I found out about this, I was loaded up with groceries, and headed home, going downhill at full speed. Suddenly I felt the board yanked out from beneath my feet.
It wasn't pretty, but I picked myself up and worked with him on some software modification ideas, and the next iteration had a three-beep warning system built in before the brakes engaged, and the brakes were gradually applied over a few seconds rather than all at once. At least I then I had a chance to ride it out.
Unbelievably, that board still runs well today. Same Lithium Ion batteries, same motor, same controller. The range is quite a bit shorter, (used to be 10-15 miles) but it still goes strong and tops out at about 19mph.
I know that the company has continued to improve the experience, and the new boards don't have controller communication issues, and they run at 30+ mph and have a 30 mile range. Plus, they are all terrain or street capable with a change of the wheels. I have only positive things to say about Metro-Board, and that's after I've eaten concrete riding one.
If anyone has the $$$ and wants a thrill, I say go for it.