Auto racing is a popular sport that has been around for many years. The term AUTO RACING can be broken down into four parts: UNSER (5 letters), LEMANS (6 letters), TEO (3 letters), and ALS (3 letters). Unser is a surname of a family of race car drivers, most notably Al Unser Sr. and Al Unser Jr., who have won the Indianapolis 500 four times each. Le Mans is a 24-hour endurance race held annually in France since 1923. TEO is a Japanese race car manufacturer that produces cars for the Super GT series. ALS stands for 'Acceleration Limiting System, ' which is a system used in some race cars to limit the amount of power they can produce.