According to reports, the first road roller was pulled by animal power.
In the mid-19th century, a new steam-powered road roller was invented.

A road roller is an engineering vehicle used for large-scale compaction operations.Any area it passes over immediately becomes flat!

For the magnetic creation part,you can first create the body of the car.
Afterwards, place the wheels on a flat surface and insert them.

You can also decorate the driver's cabin with favorite small magnetic figures.