I was planning on my first ride up Glendora Mountain Road on Saturday 9/15 (rolling from the school at 8:30am, but not planning on making it all the way up this time).
Then a grizzled vet at the LBS told me that he never rides GMR on the weekends because because it's used by people doing street luge! I thought he was pulling my leg, but he was quite serious. So I looked around and found some references to exactly this, though it seems to be limited to when the road is closed to cars. Any guidance on this issue?
A video from May 2007. You can see them passing a cyclist climbing at about 2:10.