Delving into some pretty straightforward top-speed data allows us to see how the rate of progress in road car performance has changed over the years. Or rather, how little that rate of progress has changed, because the statistics show a very stable rate of development.
Plotting those points on a line chart shows a quite linear rate of progress, the biggest leap forward coming with the arrival of the seminal Mclaren F1. To demonstrate just how linear it has been, consider this: in the four decades leading up to the 1970s, the top speed of the fastest car increased by 77mph; in the four decades since, it has increased by 75mph. Extrapolating that out over the next 40 years, is it really possible there will be a road-legal production car capable of 334mph come the 2050s?
Chiron’s (limited) top speed is 261mph