
On November 4th 2017 a test conducted by factory test driver Niklas Lilja recorded the monstrous speed of 284.55mph in one direction, then 271.19mph in other direction. Average speed of two-way 277.9 mph (444.6 km/h) on an 11-mile section of closed public highway between Las Vegas and Pahrump to claim the highest speed ever recorded by a production car.

Previously, Bugatti Veyron Super Sport which clocked 269.86mph on the Ehra-Lessien test track in 2010, and the Hennessey Venom GT’s one-way 270.49mph run from 2014 at the Kennedy Space Center, which, up until now, has been the fastest a production car has ever gone.
