The test flight was intended to prepare for the demonstration flight with which Fritz von Opel, known as "Raketenfritz", wanted to herald the rocket age in front of the assembled press.

Fritz von Opel, a German engineer and industrialist, was the second person. Grandson of Adam Opel, the founder of the Opel company that now manufactures automobiles, Fritz was a racing driver and ...

The lecturer was Fritz von Opel, motor magnate. Beside him stood a little racing car with two unusual accessories. In its rear it had something that looked like an exaggerated exhaust pipe.