Mick Jagger honking the horn of a '69 Rambler American, license plate XXK 332 I think... anyway, if you know of that Rambler still on the road with that license plate.... get Mick to sign some part of that car while he's still alive. Thank you Steve!

The photo was taken by Robert Altman outside Elektra Records on La Cienega Blvd. in Los Angeles, while Mick was honking the horn while it was being recorded for beginning (and end) of the song "Country Honk" on the Rolling Stones’ 1969 album "Let it Bleed." 

 "Country Honk " is a country version of "Honky Tonk Women" and while it was recorded first, it was released later than "Honky Tonk Women."