About 760.000 Citroen Traction were manufactured from 1934 to 1957. The Traction was designed in the late 1933 / early 1934 by André Lefèbvre and Flaminio Bertoni and it was the first front wheel drive car made in large scale production in that time. The Citroen traction introduced the use of an arc-welded monocoque frame, a big innovation for the time. Other cars of the same era were based on the frame onto which the body coachwork was built. Monocoque construction results in a lighter car and is now used in all vehicles, although body-on-frame is still recommended for large vehicles such as trucks.