Gustav Kroboth was a car constructor in Czechoslovakia. He was forced to leave the country in 1945 and moved to Bavaria, Germany. He started to produce equipment for the local farmers and in 1951 launched a scooter. Because of the heavy rain that was felt those years, he decided to build an all-weather scooter, the “Allwetter-Roller”. The project didn't work, and the company closed because of debt. Gustav Kroboth became a driving instructor, but his Allwetter-Roller was sold recently in an auction for $80,500.