One of 4QD's principal markets is ride-on golf buggies. Most American machines use petrol engines and the buggies are two or more person vehicles. There are a few electric ones, but petrol is certainly more common. You may think that a buggy is little more than a chassis with three or four wheels, a couple of batteries, a motor and a seat. It invariably seems to take them at least a year of trial and error to get a vehicle which steers properly, isn't unstable and handles correctly.
Buggies range from small, lightweight three wheelers up to more substantial four wheelers.
The three wheelers are usually lighter, so are easier to get in and out of your car. Unfortunately they are also likely to be worse at getting you and your golf clubs up a steep hill. The smaller, lighter weight buggies also tend to be less stable, they can tip over backwards if you accelerate too sharply, especially on a hill. True - this is one of their target markets but it should not be. However one man golf buggies are best viewed as recreational vehicles - not as mobility aids.