As with many China made items, the mobility cart shares some of the same deficiencies. One very important item to watch for is to be sure the scooter has a drive differential system. This allows both rear wheels to be driven and still allows for easy steering. Some China made scooters only drive one rear wheel. This is dangerous and not recommended. The carts that have just one wheel drive will tend to jerk to the opposite side of the drive wheel and can easily throw the rider off the cart.