Michael Eisenberg, a Los Angeles collector of famous motorcycles, owns a few incredible motorbikes.

He owned one of the Captain America bikes (there are more than 2, Dan Haggerty restored and sold them after Easy Rider)

Eisenberg is well-versed in the memorabilia business. He supplied many of the motorcycles that decorate the Planet Hollywood restaurants, and once co-owned a Los Angeles motorcycle-themed restaurant with Fonda and “Easy Rider” co-star Dennis Hopper

Haggerty on the other hand, had a lot of problems after his popular tv show Grizzly Adams, even sold cocaine to undercover cops in 1988, and did 10 days in jail for tax evasion in 1985.
http://www.latimes.com/business/autos/la-fi-hy-uneasy-riders-20141017-story.html


Michael Eisenberg, sits on the customized Captain America chopper Peter Fonda rode in “Easy Rider”

The gleaming stars-and-stripes panhead chopper with chromed hardtail frame is accompanied by three letters of authenticity. One is signed by the National Motorcycle Museum, where it was displayed for 12 years. Another is from Fonda and a third from Haggerty.
http://www.pressherald.com/2014/09/17/easy-rider-bike-going-to-auction/

He has owned a few Steve McQueen motorcycles too, though I can't figure out why he buys and sells them. Just for profit I suppose, damn shame

http://www.ocregister.com/articles/cars-512717-mcqueen-harley.html

Eisenberg, whose day job is selling high-end properties for Keller Williams in Beverly Hills, bought his first bit of McQueen memorabilia — a motorcycle that the actor owned and rode — 25 years ago and has watched it steadily increase in value. Actually, he’s watched it as it sits in his living room, much to his wife’s chagrin

Since then, he's bought and sold Steve McQueen's sunglasses, watch, and Chevy truck.
http://www.huffingtonpost.com/2013/01/08/steve-mcqueen-memorabilia_n_2432903.html