Update: I got him! Passed him at kilometer 3.5, only to be promptly re-passed. Then we started going uphill and he blew sky high, whereas I kept going. I don't think my time broke any records...but yippee-kai-yay anyway!!
I've passed some cool guys in time trials in my day -- a former tour winner at the Cascade Classic, and a former national champ at the Mt Hood Cycling Classic. Now I can add a former (albeit way way former) Olympic gold medalist to the list. See ya tomorrow Alexi!