Buying a supercar is fun. But dipping into a supercar maker’s list of ultra-expensive options is even more entertaining. At McLaren, that means going to MSO, short for McLaren Special Operations. To show what this small outfit can do, the British supercar maker brought an MSO-modifed version of its new (and stunning) 600LT Spider to Geneva. Total output is a relatively modest 592 horsepower (441 kilowatts), but don’t let the 600LT fool you – it’s a true super convertible.