An ancient four-wheeler went past, crawling dejectedly homeward.
You may tell the hall porter to order a cab for me, a four-wheeler.
I cannot anticipate technical progress, although perhaps an extremely expensive new machine may become available to help those who cannot manage a three-wheeler or four-wheeler.
I am glad that in the intervening years the right to the four-wheeler mini-car has been slightly extended.
The scheme would be, as we understand it, a four-wheeler vehicle, which would be a current production model suitably adapted for the disabled person.