Accordingly, Messerschmitt sought fresh avenues of income. One alternative the company came up with was the three-wheeled motorcycle/bubble car or Kabinenroller (cabinscooter) KR175, replaced by the KR200, which were designed by aircraft engineer Fritz Fend. After the Second World War, Fend, who had been a technical officer with the Luftwaffe, opened a workshop in Rosenheim, Germany.