We've watched the Rimac Concept_One see off just about every significant hypercar there is in a standing start drag race – but until Lord Pembroke took his Bugatti Veyron to Croatia there was one significant question unanswered. How would the Veyron stack up against the young pretender? Just after dawn on a chilly Croatia morning, we decided to find out. In truth, having already sampled the Concept_One's astonishing launch capability – thanks to a torque vectoring system that dials in maximum traction to each wheel, and electric motors that deliver maximum torque the instant current is applied – we expected the Veyron to be well beaten off the line. But we also knew the Veyron comes on strong with a huge whack of acceleration once the turbos get into their stride, and as speed increased it would haul the Concept_One in. But would the Veyron be close to the Concept_One at the end of a quarter mile - the classic drag race distance – or even ahead by a whisker? You'll have to watch the video to find out...