A wheel and axle, an inclined plane, and a lever! :D
The Wedge is a device that tapers to a thin edge, usually made of metal or wood, and used for splitting, lifting, or tightening, such as to secure a hammer head onto its handle.
The wedge is considered one of the five simple machines. Wedges have been used since prehistoric times to split logs and rocks; for rocks, wooden wedges, caused to swell by wetting, have been used. In terms of its mechanical function, the screw may be thought of as a wedge wrapped around a cylinder.
*Sigh*
The answer to your question is that your question has no answer. It is a complex machine. The most correct answer is wheel and axel.
However, since it involves many simple machines it is a complex machine and therefore the question is difficult to answer.
We can assume that a car is a wheel and axle (may possibly be a pulley), if looking at the type of simple machine, but the car in itself is NOT a simple machine. It is considered to be a compound machine, made up of most, if not all of the six types of simple machines: pulley (belt system), inclined plane (pedal), screw (screws all over the car), wedge (, wheel and axle, and lever (gear shift).
A wagon is a simple machine. It is a lever.
The carousel is a simple machine based on the wheel and axle.
Wheel and axle
a clock
yes
A wedge
wedge
it is a wedge!
a nail is a wedge
Wedge
A wedge
wedge is another simple machine kind of lever
its not a simple machine
wedge
Wedge
Up
wedge is another simple machine kind of lever