The 1935 Auto Union Lucca is a legendary streamlined racing car that set a world speed record for public roads on February 15, 1935 - driven by Hans Stuck to a speed of 203.17 MPH on a stretch of Autostrada near the Italian city of Lucca.  The original car eventually vanished.  Audi commissioned British restoration shop Crosthwaite & Gardiner to rebuild the lost legend. The project took over three years. The builders used archival photos and historic documents. The recreation features a larger supercharged V16 engine than the original (6.0-liter vs 5.0-liter) to allow for reliable use at modern racing events.
More pics and information here.