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At race speeds, this tunnel moves approximately 10,000 cubic feet of air past each radiator per minute -- enough air to fill a 2,400 square foot house every minute! In this photo you can see how the radiator and its plumbing mounts to the air tunnel beside the driver. The amount of downforce is amazing -- once the car is traveling at 200 mph, there is enough downforce on the car that it could actually adhere itself to the ceiling of a tunnel and drive upside down!

On a Champ Car, the wings are mounted upside down so that they provide downforce. The side pods are designed to move a huge amount of air past the radiators to help this process. The car is burning a gallon of methanol fuel every 30 seconds or so, and that process releases approximately 100,000 BTU of heat per minute that the car must dump through its radiators (one Champ Car produces enough heat in 10 hours to heat a 2,000 square-foot house all winter!).

All such parts that are electroplated must be oven-baked at a temperature of 375 degrees Fahrenheit, plus or minus 25 degrees, for not less than three hours after such plating.

The springs and shocks, as well as the equivalent of the anti-roll bar, are all mounted on top of the car just in front of the driver. 9.8.2. All highly stressed steering and suspension components shall be made from SAE 4130 steel or an alloy, specified by its manufacturer as having equivalent physical properties.

The tires on a Champ Car are incredibly important -- they keep the car on the track and translate the driver's inputs from the steering wheel, brakes and accelerator into reality. The main differences are the lack of the steering mechanism, the addition of the drive shaft and k of c the greater weight that the rear suspension must carry. Parts that have been stripped of plating must be similarly baked unless they are to be reprocessed within a three-hour period. Between the size of the contact patch of a Champ Car tire and the softness of the rubber, the tires have incredible adhesion.

Especially in the street course events, the driver continually tests the boundaries of tire adhesion -- the limit to how fast the driver can accelerate, brake or take a corner is determined ultimately by the tires.

Donington Park Motor Racing Circuit, Derbyshire, England: Opened in 1931 on the grounds of the Donington Castle, this race course plays host to super truck racing, the British Motorcycle Grand Prix, k element name the British Touring Car Championship and the Le Mans Series. In a street course race, the downforce aerodynamics have enough suction to actually lift manhole covers -- before the race all of the manhole covers are welded down to prevent this from happening. The tires on a Champ Car are much wider -- 12 inches wide in the front and 16 inches wide in the rear.

This is the same number of days in a lunar cycle, which is why much of feng shui is rooted in Chinese astrology.