This promise was never to be fulfilled. With Mike Spence's death during practice for the 1968 Indianapolis 500, fellow Brit Chris Irwin was drafted in for the P68's next race: the 1968 1000km Nürburgring. He was lucky to escape death when he lost control of his car at the Flugplatz during practice, although his injuries were severe enough for his career to be ended. The car was destroyed. In the race, once again the remaining P68 failed to finish due to mechanical gremlins. This was to be the pattern during all the remaining races for which the P68 was entered during 1968. One tantalising highlight occurred when Frank Gardner, who performed much of the P68's limited developmental testing, took pole position at the 1000km Spa race. However, once again the car flattered to deceive, as it stuttered to a halt on the first lap of the race with faulty electrics. By this time the P68's faults were all too apparent, and Alan Mann Racing decided not to travel to the Zeltweg race.