I'll bet it was the corner we know as Clavicle Cracker. NorthGate Road just below Diablo Ranch. It's happened way too many times, there should be a "no passing cyclists" sign there, but in the mean time, it'd be a good idea to assume there's always a Hummer in the wrong lane when you come around that corner.
I came down that way about 10:30 and didn't see anything.
Stay healthy and heal fast buddy.