"The following year, we built a website and promoted it on Facebook. By 2012, we had 250 scooters. It's a bit different to standing on the side of the ride holding a bucket."
The Scooter Safari has become so big that Transport Agency road management planning is required each time they ride.
The scooters - with engines of only 49cc - can move at no more than 55km/h.
About 250 of the nifty fifties slowed traffic on this year's safari and it was all for a good cause
"This has become part of our life. We started this thing and I guess we just keep on doing it."
Through the original safari, its Southern Scooter Challenge and Central Plateau Challenge spinoffs, thousands has been raised for the Cancer Society - $598,000 from the Scooter Safari alone.
"We can't take all the credit - each rider gets their own sponsor," Mrs Rattray said.
She said the eight-hour trip can be tough but nothing compared with what those with cancer faced.