Tractor in confined areas. The most common variation of the classic farm tractor is the hoe, also called a hoe-loader. As the name implies, it has a loader assembly on the front and a backhoe on the back. Backhoes attach to a three-point hitch on farm or industrial tractors. Industrial tractors are often heavier in construction, particularly with regards to the use of steel grill for protection from rocks and the use of construction tires. When the backhoe is permanently attached, the machine usually has a seat that can swivel to the rear to face the hoe controls. Removable backhoe attachments
Rear-engine design ease of manufacture: A rear-engine, rear-wheel drive vehicle is prone to oversteer, which allows for tighter turner radius than that of a neutral or understeer condition of a vehicle, however this causes vehicle instability. For this reason, rear-engine design has been abandoned as a design option for regular passenger cars, but still maintains a viability for race applications. Although this layout was once popular, it was mainly found in small, inexpensive cars and light commercial vehicles. Most car makers have abandoned the rear-engined layout apart from Porsche who has gradually developed their design with improvements to the suspension and chassis