Saturday 18th May 1968
Graham Hill was the first to break the 170 mph barrier in qualifying at Indianapolis 500, and recorded a four-lap average of 171.208 mph in his STP-Lotus 56 turbine car, his fastest lap being 171.887 mph.
Graham Hill was the first to break the 170 mph barrier in qualifying at Indianapolis 500, and recorded a four-lap average of 171
