Formula 1
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the 2009 Formula One season the engines have been further restricted to 18,000 RPM.
A wide variety of technologies—including active suspension, ground effect, and turbochargers—are banned under the current regulations. Despite this the current generation of cars can reach speeds up to 350 km/h (220 mph) at some circuits. The highest straight line speed recorded during a Grand Prix was 356.5 kph (221.5 mph), set by David Coulthard during the 1998 German Grand Prix. A Honda Formula One car, running with minimum downforce on a runway in the Mojave desert achieved a top speed of 415 km/h (258 mph) in 2006. According to Honda, the car fully met the FIA Formula One regulations. Even with the limitations on aerodynamics, at 160 km/h (99 mph) aerodynamically generated downforce is equal to the
weight of the car, and the oft-repeated claim that Formula One cars create enough downforce to "drive on the ceiling", while possible in principle, has never been put to the test. Downforce of 2.5 times the car's weight can be achieved at full speed. The downforce means that the cars can achieve a lateral force with a magnitude of up to 3.5 times that of the force of gravity (3.5g) in cornering. Consequently, the driver's head is pulled sideways with a force equivalent to the weight of 20 kg in corners. Such high lateral forces are enough to make breathing difficult and the drivers need supreme concentration and fitness to maintain their focus for the one to two hours that it takes to complete the race. A high-performance road car like the Ferrari Enzo only achieves around 1g.
As of 2010 each team may have no more than two cars available for use at any time. Each driver can use no more than eight engines during a season; if more are used, he drops ten places on the starting grid of the event at which an additional engine is used. Each driver may use no more than one gearbox for four consecutive events; every unscheduled gearbox change requires the driver to drop five places on the grid unless he failed to finish the previous race due to reasons beyond the team's control.
Revenue and profits
Formula One is profitable for most parties involved—TV channels make profits from broadcasting the races, and teams
DTM has become a popular destination for retired F1 drivers