This photo is from the website entitled "The Great Gator Crossing": http://greatgatorcrossing.com/
and this is the explanation beneath the picture:
"Shawn (left) and Shinji (right), riding two Dan Gurney Alligator Motorcycles, will set off on an epic 9-state, 2,500+ mile pilgrimage from Atlanta to the Alligator factory – Dan Gurney’s All American Racers in Santa Ana, California. What makes this trip so special is the simple fact that a trip of this distance has never been done on an Alligator. Plus, we are raising funds for the Foundation for Women’s Cancer!

A documentary is being filmed from the planning stages to the completion. Great interest has already begun to form as this ride is a first.
We will be departing from Marietta Motorsports located at 101 South Marietta Pkwy SE, Marietta, GA 30060
K.S.U. (Kick Stands Up) at 9:30 am – Come join us and the many others who will riding with us to Barber Vintage Motorsports Museum.

The ride is due to start tomorrow, 31st May 2014. Good Luck Shinji + Shawn! PNB
PS Based near Atlanta, Georgia, Shinji Morokuma is the only person we know who owns both a Gurney Alligator and a Peraves Monotracer!