I'm hoping Michael Ferner sees this and weighs in with some of his impeccable detail.
I had little info on Harvey Kennedy. With good reason, as it turns out he usually was known as "Capt. Kennedy" (why?, I have no idea, but a clue can be found later). The account of his fatal accident at Lima, Ohio in August 1917 has the usual bio hyperbole:
"Kennedy was a well-known West Coast driver, living in San Francisco, who had won the 1915 Santa Monica road race and had set a world’s speed record at the Verona track several weeks earlier." I have no record of him at Santa Monica.
He is listed as competing in the 1915 Vanderbilt Cup (at San Francisco) and racing at Kalamazoo and Tacoma, but a clue to this mystery man came in pre-race hype for the '15 Vanderbilt Cup which describes him as: "an old-time racing driver, doing considerable contest work as a member of Moross' racing team." Ok, this explains it and what little else I can turn up on him, i.e. setting a "World's Record" in Miles City, Montana wheeling "Barney Oldfield's Christie", etc. Interestingly, the only times he seems to turn up as "Harvey" are in the pre-Vanderbilt article and his fatal accident and aftermath.
So, Michael, what do you have on this Kennedy fellow results wise? I found him listed as an entry in a race at Fort Wayne, Indiana (Centlivre Park) and also found him in pre-race newspaper items giving entries for upcoming events at the Wisconsin State Fair (err, including one a week after he died)