Nodding donkey

Not the US or the middle east, but Nottinghamshire just south of Worksop!
Found this little fella pumping away into that tank on the left that had a label saying - 40,000 litres.
At today's prices that's $25,000 when full.
Mind, you wouldn't get far if you put it in your car tank.
Had a nice picnic soon after in Clumber Park before heading north for a few days.