I was looking for pictures of the early Cobra tested by Ford in Dearborn (full width frameless plexiglass windscreen) and didn't find it but did run across a long long thread of early 260 Cobras racing at Riverside. Never saw so long a thread..don't think it's the same car that went to Dearborn, as this Riverside car only has plexiglass windscreen for the driver.
https://www.davemacdonald.net/galler...60firstwin.htm