The longest vehicle in the world

Perhaps you thought that some of the huge tractor trailers on the road today were the longest ones manufactured. But the longest of those measures only about 151/2 metres. Imagine, if you can, more than elevan of those long tractor trailors, one behind the other, and you will come up with the longest vehicle in the world. This is the US Army Overland Train, a 172 metres long truck that is used to transport rockets or other big objects. This truck weighs 450 metric tons, has 54 wheels, and 4 engines. Just imagine the gas bill when this monster has to fuel up its 28,000 litre tank, especially at today’s petrol prices!