There is a lot going on at the top end of the hypercar game, with teams like Bugatti and Hennessey vying for pole position. In terms of two-way land speed records, however, it appears that a new top dog has emerged. On a Nevada public roadway, Koenigsegg’s Agera RS has achieved an incredible average speed of 277 mph (447 km/h), setting a new standard for a production vehicle.