They are taking part in the Mongol Rally, and will have to drive about 8000 miles in an old car.
The rally rules state that the car must have an engine no bigger than 1000cc (61 cubic inches).
Once they leave London, they are on their own. There is no backup, no support, and no big four wheel drive vehicle to pull them out of 20ft wide potholes.
When Bottomgear leave England they hope to travel through France, Belgium, Germany, Czech Republic, Poland, Ukraine, Russia, Kazakhstan, Russia again, and finally Mongolia.
We will regularly be updating our LiveJournal as we prepare for, and undertake this journey. Please add us to your friends list, and tell everyone you know about the two crazy Englishmen driving a very small car a very long way!