Children's car tracks with a manual generator

 

— electric powered autotracks, in which each car receives electricity from its own hand generator. These kits have two interesting features. Firstly, they do not require batteries: the electricity needed for movement is generated by rotating the generator handle. Secondly, by changing the speed of rotation of the handle, you can change the speed of the machine. This is very convenient for competitions: the one who manages the generator more competently wins, providing maximum speed and at the same time not allowing the car to fly off the track. Therefore, tracks with this feature, usually, are two-lane (see "Number of lanes"), and the cars in them move along special guides through which they receive power.