Looks like fun!
"Drivers will then either head north via the Arctic Circle or travel through Kazakhstan or Iran and Turkmenistan.
'No set route'
Teams are expected to take between three and six weeks to complete the rally.
The rules are that each vehicle must have no more than 1.2 litres of "raw engine power under the bonnet", each team must raise at least £1,000 for charity, and that there is no set route, no professional drivers and no back-up or support of any kind."
http://www.bbc.co.uk/news/uk-england-sussex-18842310