From GotBlueMilk‘s webpage, Acrh Motorcycle sponsored Track Day at Laguna Seca. They have posted galleries of photos from the event.
An album with 69 photos of Keanu (call name Charlie) on his bike is here. A gallery of photos of folks on Arch bikes is here. Keanu is in the background in a few. The page with all the albums is here. Photos are separated into albums by bikes and riders.
Update: Many thanks to tgfilms for sharing a photo on instagram.
Update X2: Many thanks to danthomsenla for sharing his selfie with Keanu and Gard on instagram.
Many thanks to 4ever2wheelcom for sharing a photo on instagram.