Mulle Mek is assembling an electric car

Skillful mechanic Mulle Mek is the hero of many children's books. From a pile of useless scrap, he can make a car, a motorcycle, an airplane, and much more, while also explaining in simple words how all these machines work.
This time, Mulle Mek decided to assemble an environmentally friendly electric car. However, he doesn't really understand electricity, so his friends - Lukas Diesel and Doris Countson come to help him. They will explain to Mulle and the readers what electric current is, where it comes from, and how it works.