Great story about Jimi Hendrix's free concert in San Francisco [View all]
With I'd been there.

Remembering Jimi Hendrix's psychedelic takeover of San Francisco's Golden Gate Park
By Charles Russo/SF Gate (San Francisco Chronicle)
Jimi Hendrix placed his guitar in the front seat and then proceeded to sit in the back.
Despite being the hottest new act in popular music on that summer day June 25, 1967 he was traveling alone without any entourage. In fact, when Jeffrey McMeans knocked on the door of room 152 at the Travelodge near Fishermans Wharf, he was surprised to discover Hendrix quietly waiting by himself to be picked up.
Just an hour prior, McMeans, a 24-year-old San Francisco State student, was at a meeting in the Psychedelic Shop on Haight Street, volunteering his time in support of an on-the-fly free concert in Golden Gate Park. When shop co-owner Jay Thelin asked if anyone had a car, McMeans raised his hand. Soon after, he was chauffeuring Hendrix back across town in his dilapidated vehicle a 1959 Studebaker with holes in the ragtop roof on a foggy Sunday afternoon.
As they headed south through the city toward the Haight-Ashbury, Hendrix sat in the back seat, shy and polite, wearing a black and gold Victorian-era military jacket that he had found in a secondhand clothing store in London. McMeans was also sporting some vintage apparel of his own, in the form of a womans fur that he had fashioned into some sort of Davy Crockett cap crossed with a Russian babushka headpiece. Hendrix couldnt help but comment on how cool it was.
Read more:
https://www.sfgate.com/sf-culture/article/jimi-hendrix-golden-gate-park-17279630.php
Note: I suspect the poster is a fake, but ...