Ferrari 290 S s/n 0656 practicing at 1957 Sebring. Driver is probably a mechanic. In the real race, it was driven by Masten Gregory and Lou Brero to  a 4th place.<a rel="nofollow" class="external autonumber" href="http://www.barchetta.cc/english/All.Ferraris/Detail/0656.290S.htm">[1]</a>
Unknown photographer
<a rel="nofollow" class="external autonumber" href="https://live.staticflickr.com/3728/9217851886_1c26924622_b.jpg">[2]</a>