Bush, also a former US ambassador to China and CIA director, has a form of Parkinson's disease that has forced him in recent years to use a motorized scooter or wheelchair.
Those who want it legalized point to much higher-impact recreation that is allowed in the parks: motorized vehicles in some areas, mountain biking and fishing.
The inland-waterway freight fleet consists of tugs, motorized barges, towed barges, and flat-bottomed feluccas (two- or three-masted lateen-rigged sailing ships).
Traditional poled gondolas are a favourite with tourists but are now vastly outnumbered by motorized public-transit water buses (vaporetti) and private water taxis.
The vertical bandsaw blade is an endless narrow metal strip, with teeth along one edge, that runs around two large motorized pulleys or wheels that are mounted on a frame so that one is directly above the other.
Waterborne traffic above Baṣrah has been replaced, largely, by train and road transport, but shallow-draft motorized vessels, small sailing ships, and pleasure boats still use the river.
The marsh dwellers of southern Iraq use a variety of motorized boats up to 50 feet (15 metres) in length, along with balams and other traditional craft.
Transport in Tanzania spans a wide spectrum, from the motorized means made possible by roads, railways, seaports, and airfields to the traditional carrying of loads by animals and people.
Communication between villages is usually easy, thanks to canals and barges, rural roads (many of them paved), and the ubiquitous bicycles and motorized tricycles.
The horsecar, precursor of the motorized streetcar, spread to such large cities as Boston, New Orleans, and Philadelphia, then to Paris and London, and later to small cities and towns in the United States.
Further experimentation with motion led Calder to create motorized pieces; it was those works that were famously dubbed mobiles by artist-provocateur Marcel Duchamp.
