Closer to 25l[0], which at 6l/100km (UK average for new cars in 2012 is 5.8l/100km[1]) gives you 416km, at 110kmph (68mph) is 3.7 hours. Still not quite 10 hou

Closer to 25l[0], which at 6l/100km (UK average for new cars in 2012 is 5.8l/100km[1]) gives you 416km, at 110kmph (68mph) is 3.7 hours. Still not quite 10 hours, but well past the 2 hours. [0] http://www.aqua-calc.com/calculate/volume-to-weight http://www.aqua-calc.com/calculate/volume-to-weight using 'petrol', which is going to be different to what airlines use, but it's the closest i can find [1] https://www.gov.uk/government/uploads/system/uploads/attachment_data/file/482686/env0103.xls https://www.gov.uk/government/uploads/system/uploads/attachm...