>>1204435Almost nowhere. Longboards and skateboards are very inefficient compared to the worst bicycle. They are also much more difficult to master and control. Even if you have mastery, there is no good method for shedding speed and braking sucks. You either have to skid or wear some gloves with a piece of plastic and power slide so that your face would be at the level of a car bumper. A scooter is better from a handling and braking standpoint, but it is still far inferior to a bike.
>>1204446Sidewalks are usually not as smooth and often have these little line grooves that slow you down in the USA. See the pic to see what I am talking about.