Children-Car, built by Hans Glas, based on a Goggomobil with 125ccm-engine
Yes indeed.
Yes and no!
This children's car was not built by Hans Glas, but by his chief engineer Karl Dompert. It was built for Hans Glas' grandchildren, the two sons of Andreas Glas.
It had a 125 cc Ilo engine, and it was definitely not based on a Goggomobil, because this car was built in 1953, well before the first Goggomobil.
Two more pictures, one during construction, the other one from 1956: