If you look closely you'll note that thats a photo taken at a Drag Race. Judging from the safety equipment on hand, I'd say that that photo is Post War and almost certainly from the early 50's. The bikes crossed up because the rear tires spinning in 1st and shes ready for the 2nd gear upshift. Presuming that the chick is maybe 22yo... Well, you do the math but if we had a time machine, I'd... Nevermind... One thing I've learned about women riders is that, while most are pretty kool, a fairly large percentage are people with "Issues" and training in martial arts. Tread lightly boys!