The battle for straight line supremacy has been intensifying beyond measure lately. The closely fought battle for top speed bragging rights has been like a triple threat match between Hennessey, Bugatti and Koenigsegg with the Swedish hypercar manufacturer having recently snatched the crown for the fastest production car from the Bugatti Veyron Super Sport with its Agera RS. Koenigsegg’s Agera RS achieved a two-way average speed of 277.9mph (447kph) on Nevada’s Route 160 while clocking an unbelievably fast 284.7mph (458kph) on one occasion!