CAR enthusiasts and travel adventurers raising money for cancer research are roaring through Hawkesbury today.
They are part of the annual Mystery Box Rally, involving different car trips which participants bid for in private auctions.
About 150 participants in the rally left Sydney on Saturday, most not knowing where they were headed.
‘‘The first of the mysteries is the route,’’ a spokeswoman for the rally said.
‘‘Destinations and routes are kept secret with the daily route revealed to the teams just before they drive off each day.
‘‘Participants arrive not knowing where they are headed or how they will get there.’’
It is called Mystery Box because the travellers are also unaware of what vehicles they will be travelling in, until all bids are in and their adventures start.
They range from small hatchbacks to large station wagons.
The vehicles are owned and provided by Manheim Auctions Australia, which ensures they are registered and roadworthy.
The more money a team raises the better its chance of winning a ‘‘dream’’ mystery box.
‘‘It is a road trip to rival the world’s greatest drives and all whilst raising much needed funds for cancer treatment and research,’’ the rally’s spokeswoman said.