vice-president of engineering Herbert C. Snow. Three short years later Cord and Markin came under investigation by the Securities and Exchange Commission for their dealings in Checker Cab stock, which had raised the price from US$7 per share in November 1935 to $69 per share in April 1936. In order to avoid prosecution, Cord sold the Cord Corporation to the Aviation Corporation in 1937. Morris Markin bought out Cord's interest in Checker Cab and was able to secure complete control of Checker. A-C-D eventually folded in the wake of the stock scandal but the now-independent Checker continued to produce taxicabs. Between 1929 and 1942, when production was suspended for World War II, Checker Cab made 29,260 cabs. Return to tradition After the war, Checker Cab began developing several new models which never made it to production; the Model A2 that was introduced in 1947 was mechanically similar to the pre-war (1939) Model A. The Model A also had switched to a new engine supplier; Checker cabs now used the Continental inline-six. The A2 was introduced alongside the A3, which had a different internal configuration to seat up to eight passengers. The A2/A3 went through minor modifications as the A4/A5 and A6/A7. In addition to taxicabs, Checker briefly built the chassis for the Series E transit buses; the primary customer was Detroit Street Railways. In 1956, Checker introduced the A8, which continued with minor styling changes as the A9/A10 and A11/A12 through the end of Checker vehicle production in 1982. Also that year, the company changed its name to Checker Motors Corporation. The A9 was the designation for the taxicab model, while the A10 was the corresponding vehicle sold to the public as a passenger car; a similar relationship exists between the A11 and A12, which were introduced in 1961. By the 1970s, conventional automobiles from the Big Three were replacing the purpose-built Checker Cabs; the Checker was considered "too big, too cumbersome, [and] too thirsty" as it had been built to meet obsolescent requirements. Subcontracting After winding down vehicle production in 1982, Checker Motors served as a subcontractor, supplying automotive parts and stampings to Detroit-area manufacturers. In 1989, Checker Motors and Checker Holding Company were involved in a reverse acquisition with International Controls Corporation (Great Dane Trailers), and the company later changed its name to CRA Holdings. The company was reorganized in 1995 into three wholly owned subsidiaries: Yellow Cab