In the early sixties the A.C.O. offered a special prize for the first gas turbine car to average more than 150 kph (93.2 mph) for the 24 hours.
Rover, who had been experimenting with turbines for some time, took up the challenge, joining forces with B.R.M., who provided a widened version of their Formula One chassis to accommodate the turbine power plant, and a 2 seater body.
1963 saw the debut of the Rover B.R.M. Clothed in a rather ugly open body, it ran like clockwork, ably conducted by Graham and Richie Ginther, to average 108 mph, easily beating the target, by over 14 mph.
By 1965 a new, prettier body had been fitted, designed by William Towns. This time the run did not go so smoothly, but it still managed a highly creditable 10th place, at 98.8 mph, Jackie Stewart being Hill's partner this time.