balloon Ice skates Inline skates Pack animal Roller skates Scooter Skateboard Walking Wheelchair Sustainability Cycling and walking, above all, have been recognized as the most sustainable transport systems. In general, all muscle-driven mobility will have a similar energy efficiency while at the same time being almost emission-free (apart from the exhaled during breathing). The negative environmental impact of private transport can be alleviated by choosing the optimal modal share for a given environment and transport requirements. Dedicated infrastructure Automobile repair shop Controlled-access highway Diner Drive-thru Drive-in theater Filling station Garage (residential) Motel Parking lot Rest area Retail park Roadside zoo Safari park See also Auto rickshaw Air travel Chauffeur Taxicab Ridesharing company Vehicle for hire Peak car Car sharing Hitchhiking Mobilities Individual mobility Personal rapid transit References