Optimus Prime eat your heart out, Earthlings have some pretty large robots too.
Asked by: Sarah Mellish, St Albans
According to the Guinness Book Of Records, the largest walking robot in the world is reported to be Tradinno, a 15m-long dragon robot weighing 11 tons that was used in a German theatre for the play Drachenstich. Powered by a two-litre turbo diesel engine, it can breathe flames to a distance of 1.5 metres.
However, in the future, this dragon will be like a toy compared to the 200m-long robot container ship Vindskip (above image) planned for construction, which would traverse the seas using its giant sides as sails, and its computer brain to keep its course.