Cool video. I used to race competitive single engine go-karts a many years ago on several different go-kart tracks in my area. My sprint kart did about 40-50 mph and no gearing. The thing about go-karting is we are very low to the ground and the ground looks like you are going faster than it really is. 28 mph is a pretty good speed for these karts. This Kart takes me back to my old racing days with my Dad. Thanks for the video. Take care.
That depends on how hard you drive while turning, passenger weight, etc. My tires were replaced after 200 miles/320 kmh (the app has an odometer). A set of tires ran about 400 USD at the time.
If you have to ask this question you need to build up to speed until you learn its behavior. Driving anything with skill takes practice. Flipping is the least of your worries. Getting creamed by a car or hitting anything is the biggest risk.
They claim 15 miles on full charge, but I say it depends on how fast you are going and battery worn down over time. I'll try to get an accurate estimate when I have time.