[pseudohadamard]

I was in a military museum last year with a fairly decent tank collection and the M60 they had on display there had a fuel efficiency measured in hundreds of metres per litre. The guy I talked said it'd burn about a litre of fuel to move it outside for display. It was also gigantic compared to the other armour parked near it, about the size of a Chevy Suburban. You couldn't have missed it on the battlefield.