Friction-powered Coca-Cola truck, 1950s German tinplate

• Friction Motors in Toys - A friction motor, also known as a push and go is a type of motor that uses friction to create motion. It is commonly found in toys, particularly in vehicles such as cars and trains. The motor works by using a spring-loaded mechanism that is activated when the toy is pushed or pulled along a flat surface. The movement of the toy causes the friction between the wheels and the surface to turn the gears inside the motor, which then propels the toy forward.
  
  Friction motors are known for their simplicity and low cost, making them a popular choice for children's toys. They are also easy to use, as they do not require any batteries or electrical power to operate.
  
  However, there are some drawbacks to friction motors. They can wear out over time, especially if the toy is used frequently. They also have limited speed and power, and the motion can be affected by the surface on which the toy is used.
• Circa - A Latin term meaning 'about', often used in the antique trade to give an approximate date for the piece, usually considered to be five years on either side of the circa year. Thus, circa 1900 means the piece was made about 1900, probably between 1895 and 1905. The expression is sometimes abbreviated to c.1900.

This item has been included into following indexes:

• friction driven motor vehicles - toys and models 129
• Tipp & Co. (Germany) - toys and models 16
• Volkswagen - toys and models 40