Dyson’s new vacuum has a couple of tricks up its sleeve — not only is it the most powerful cordless cleaner ever released by the British company, but it can also be used as a mop. Yes, really. Known as the Dyson V15 Detect Submarine, this £799 cordless cleaner arrives with the first of a new generation of motors, dubbed Hyperdymium, that can reach top speeds of 135,000 rpm. For comparison, the engines on a Boeing 737 jet hit an average of 15,000 rotations-per-minute and Dyson’s motor regularly spins 9x faster than a Formula One engine. That eye-watering speed enables the Dyson V15 Detect Subma…