Automobile manufacturers design some very sophisticated and high-powered automobiles for customers who use them for everyday driving and transportation with a possibility of weekend racing. At one time most road racing or drag racing enthusiasts custom-built their own performance cars from stock models using custom racing equipment. These drivers were also usually very experienced racing enthusiasts and knew how to handle such cars. The introduction of high-powered vehicles to non-racing drivers can be deadly to both the driver and others because they lack training and do not understand the vehicle's power. Standard markets often decline to insure these vehicles. This explanation of insurance benefits is provided by Insurance Marketplace.