During their summer holidays four Scottish students are planning to drive 10,000 miles to Mongolia in a biodiesel car - which they claim is a world first.
The students are taking part in the Mongol Rally to raise money for the Mercy Corps charity and will compete against other teams from around the globe.
The students from St Andrews University will drive through 21 countries to their final destination Ulaanbaatar, the Mongolian capital.
The team, called the Green Yaks, will set off on the race on July 24 from Goodwood, West Sussex.
The team expects to take between four and six weeks to complete the route, if their unconventional car fuelled by biodiesel manages not to breakdown.
The teams claim that no-one has ever tried this in a car powered by vegetable oil or an animal fat-based fuel before.
Team leader Teddy Wadsworth said: "We wanted to do something extraordinary with our summer holidays, and travelling all the way to Mongolia in a car that already has 199,000 miles on the clock, one broken window and that's fuelled by biodiesel will certainly be a little different.
"The BP oil spill has shown exactly how important alternative fuels like biodiesel are too, so we're happy to be able to have our adventure, raise funds for charity and do our bit for the environment too."
The team members all study sustainable development.
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