The hint is in the name. This thing simply is not a wheelchair. It isn't even trying to be one. It is meant to carry a folding wheelchair as cargo. Therefore we shouldn't compare it to wheelchairs, those things capable of doors and elevators. This thing is a different type of vehicle, something between a bicycle and an electric go-cart. It isn't for daily mobility, for taking to the grocery store. It is for a specific type of wheelchair user: those with dexterity and strength to handle and setup the machine who want to get onto trails at bicycle speeds.