Okay, here's a quiz for you?

I found an old photo of the following (I'll scan and post later) -

What: Green Opel GT, marked in white with "Ray Jensen BUICK,
Houston, Texas" and "1 HP" on the doors and hood.
The Date was: Summer of 1970
The Location was: Lake Afton, near Wichita, KS
The Event was: Sports Car Road Race & Rally

Who's car: No idea! Would anyone know who'd be the owner
and driver of that car?

Manhattan, KS