ClassicPics (@History_Pics) tweeted at 7:15 PM on Sun, Apr 20, 2014: The rooftop test track on the Fiat factory in Turin, 1928.

ClassicPics (@History_Pics) tweeted at 7:15 PM on Sun, Apr 20, 2014: The rooftop test track on the Fiat factory in Turin, 1928.