Hmm, I'd say that thing is moving at maybe 4mph itself. Certainly no more than 8... (the speed limits for mobility scooters on pavements, and the open road, which is probably what this thing technically counts as for the purpose of licensing). Which are respectively an extremely fast march or a slow jog, and a moderate running or slow cycling pace, so it's still going to look quick vs everyday pedestrians and be a slightly quicker way of getting around, same as city trams capped at 15km/h (~9mph) are. But I wouldn't choose it as a way to get what could be a good 10~15 miles from home to work yet...