On-road autonomous vehicles and other vehicles operative to: autonomously collect and transport a load over public roads, autonomously collect and transport a passenger in a cabin, autonomously collect transport and place a functional load according to a request, autonomously collect and use a functional load, exchange a functional load between at least two on-road autonomous vehicles in a convoy, lift and transport a load by at least two on-road autonomous vehicles, charge batteries of the on-road autonomous vehicle on the move, provide a hybrid air-gap and mechanical protection for a passenger cabin, protect the on-road vehicle from impact with foreign objects, control a length thereof, reduce drag on the vehicle, and adapt to carry a long load.