Many thanks to @LavenderFlo for tweeting the link to the site!
Andrew Kohn has posted a piece on the Quail Motorcycle Gathering in Carmel on May 16 for Asphalt and Rubber. If you scroll down you will see one of the original, unmarked HQs of Keanu sitting on the bike. In the thumbnails, there is a second photo.
Update: Motorcycle Cruiser has a photo of Keanu at the event. It is number 12 in the gallery and it enlarges.
Many thanks to Andrew Kohn who appears to be the rightful owner of the photos.