Demolition Derby

Bizarre versions of the sport using combine harvesters, and lawn mowers have been practiced in various parts of the world. Larger vehicles, such as pickup trucks and SUV's were rarely used in demolition derby (though school bus demolitions have long been a popular exception), but have recently become popular in demolition events. Recently a new class for minivans has been added to some derbies because of the abundance of older vehicles.
The vehicles are stripped of interior fixtures, trim, plastic, lights, and glass. They are repainted, often in loud, garish designs and low budgets (spray paint is frequently used to mark names, slogans and identification). The driver's side door is usually painted a distinct white color, to allow the other drivers to avoid it and to allow numbering. Additional modifications include trimming sheet metal from around the wheel wells, removing parts of bumpers, welding the doors shut, and relocating the battery and gas tank. The radiator is sometimes relocated to the back seat. To make the cars last longer, they are occasionally pre-bent, frames notched, rear bumper removed, trunk lid notched, and rear coil springs are (when rules allow) replaced with leaf springs. In many instances, roll bars, fire extinguishers, and other safety equipment is installed. Sometimes the removed parts create bulk availability of off-color parts for older cars that are compatible with them. In most cases, any vehicle parts must be "stock," though in some derbies a "gladiator" or "outlaw" division allows cars to be extensively modified and reinforced.