This Austin Healey sports car was created by Donald Healey in 1953, using a 2.7-liter, four cylinder Austin A-90 engine. The 100M was a special enhanced version of the car offered for just one year, 1955-1956. Modifications included a high compression head, four-speed gearbox with overdrive and improved front brakes. 100Ms competed in the Mille Miglia in 1953 and 1954.