Skiing is an automotive driving stunt

Stunt

A stunt is an unusual and difficult physical feat, or any act requiring a special skill, performed for artistic purposes in TV, theatre, or cinema...

 where the car is driven while balanced only on two wheels, either the pair on the driver side or on the passenger side.

The stunt is generally performed by driving one pair of wheels up on a ramp to lift one side of the car. Alternately, the stunt can be done in a vehicle with a high center of gravity

Center of gravity

In physics, a center of gravity of a material body is a point that may be used for a summary description of gravitational interactions. In a uniform gravitational field, the center of mass serves as the center of gravity...

 (such as a 4x4 or SUV) by turning sharply or at speed. This technique is more dangerous because there is a strong possibility of the vehicle tipping completely over. Another technique is to let some air out of the tire

Tire

A tire or tyre is a ring-shaped covering that fits around a wheel rim to protect it and enable better vehicle performance by providing a flexible cushion that absorbs shock while keeping the wheel in close contact with the ground...

s that will be on the ground, so that the car can tip easier, as well as keep its balance better. Once up on two wheels, the car has to be balanced by steering (much as one would when riding a bicycle) which makes it necessary to drive more or less in a straight line. The vehicle used must also be fitted with a lockable differential

Locking differential

A locking differential, diff-lock or locker is a variation on the standard automotive differential. A locking differential may provide increased traction compared to a standard, or "open" differential by restricting each of the two wheels on an axle to the same rotational speed without regard to...

 (common on 4x4s).

Famous uses

The stunt has been used in many movies and television series, including Knight Rider, The Dukes of Hazzard

The Dukes of Hazzard

The Dukes of Hazzard is an American television series that aired on the CBS television network from 1979 to 1985.The series was inspired by the 1975 film Moonrunners, which was also created by Gy Waldron and had many identical or similar character names and concepts.- Overview :The Dukes of Hazzard...

, and two of the James Bond

James Bond

James Bond, code name 007, is a fictional character created in 1953 by writer Ian Fleming, who featured him in twelve novels and two short story collections. There have been a six other authors who wrote authorised Bond novels or novelizations after Fleming's death in 1964: Kingsley Amis,...

 movies. The British stunt driver Russ Swift performs this maneuver as part of his shows and has achieved it in a wide range of vehicles including trucks. His son Paul also uses it in his displays and once rolled a Ford Fiesta whilst attempting to drive around Cardiff's Millennium Stadium at the Wales Rally GB in 2005.

In the Knight Rider series, KITT

KITT

KITT is the short name of two fictional characters from the adventure TV series Knight Rider. While having the same acronym, the KITTs are two different entities: one known as the Knight Industries Two Thousand, which appeared in the original TV series Knight Rider, and the other as the Knight...

 had a special function button on the dashboard called "Ski Mode" which, when pressed by Michael Knight

Michael Knight (Knight Rider)

Michael Knight is a fictional character and protagonist in the 1980s Knight Rider television series played by David Hasselhoff. The character first appeared in the opening scenes as Michael Long, played by Larry Anderson in the beginning of the pilot.- Michael Long :Born Michael Arthur Long on...

, would cause KITT to drive on two wheels.

The stunt was also used recently by the character Bumblebee in the 2007 Transformers film, in a scene just before the robot changes the exterior disguise from the 1976 Chevrolet Camaro to the 2009 Camaro

Fifth-generation Chevrolet Camaro

The fifth-generation Chevrolet Camaro is a pony car produced by General Motors and marketed under the Chevrolet brand. It is the fifth distinct generation of the Camaro to be produced since its original introduction in 1967...

. In the movie, Bumblebee's retro look is insulted by Mikaela Banes

Mikaela Banes

Mikaela Banes is a fictional character from the Transformers universe. She is differentiated from "typical" women in her age group, having inherited mechanical skills from her father, Cal, a grease monkey and paroled car thief...

 and Bumblebee stops to eject her and Sam Witwicky from the car. Bumblebee then drives off and skis on two wheels past a 2009 Camaro that drives by and scans it. Bumblebee then returns moments later to Sam and Mikaela, surprising the two, as the newer version of the car.

It also feature in the film "Transporter 3" to ski between two semi trucks in an escape bid by the films main characters.