In Aug. 2011 in Tibet, three friends are on the road to smashing more records when they complete the longest-ever taxi journey - 45,000 miles across the world. Paul Archer, 24, Leigh Purnell, 24 and Johno Ellison, 28 broken the Guinness World Record during their trip in China's southwest Tibet Autonomous Region.

"The highest plateau we reached was on the border with Tibet and the rest of China, at 5,218 meters we realized this was pretty damn high, discovering that we may have broken the World Record for the longest ever taxi journey! The effects at this height were apparent, breaking all of the rules of acclimatization for altitude, becoming out of breath by just getting out of the car and becoming light headed as if you stood up too quickly. Luckily for us as we headed north through China the altitude reduced as we left the plateau relieving both ours and the taxis symptoms; the team aimed to get to the city of Dunghuang in just a couple of days," revealed in their "It's on the Meter" travel blog.

Standing on the roof of their cab, the men salute having reached Mount Everest base camp.[Photo/"It's on the Meter" travel blog]

Driving by the Potala Palace, known as the most famous historical and cultural museum of Tibetan Buddhism.[Photo/"It's on the Meter" travel blog]

"Highest ever taxi Journey?" marked in the travel blog when they passed the Tanggula Mountain with an altitude of 5231m, the natural boundary between Qinghai and Tibet..[Photo/"It's on the Meter" travel blog]