The Army Indian was made by the same company that produced the Indian Scout motorcycle souped up by Invercargill's Bert Munro in his successful bid to break the motorcycle under-1000cc world record at Bonneville in August 1967. His epic run was later made famous in the movie The World's Fastest Indian.
The Indian was not an easy motorcycle to ride, as Heritage New Zealand's Northland manager Bill Edwards can attest.
"When I was younger I owned, briefly, an Army Indian Scout 741B. It was only 500cc, and was a very difficult bike to drive, with the right-hand throttle set for 'advance' or 'retard' to line up the pistons properly for ignition. It also had a gear stick and a foot clutch. The throttle was operated by the left-hand grip, and oddly enough you had to take your hand off the throttle to change gears," he said.
"Presented with such a complex sequence of operation, I can see how a driver could lose control of the bike quite easily during a tricky manoeuvre, or even encountering something a bit unexpected on the open road."
Whether the complexity of operation was a contributing factor, or whether other factors came into play, the mystery of the misdirected Indian was worth following up.
"Our research has touched on the daily lives of men and women in military service, volunteers and civilians, all of whom have shared some wonderful stories with us," he said.
"We'd really love to hear the story of how the driver of this military motorbike may have taken the thrill of off-roading just a bit too far."
Anyone who can shed any light on the mystery is invited to contact Bill Edwards on (09) 407-0471 or bedwards@heritage.org.nz