what is the total number of drivers who did not finish the 8th glover trophy race?
8
Pos Driver Entrant Constructor Time/Retired Grid
1 Innes Ireland Team Lotus Lotus-Climax 1.00:14.8 4
2 Stirling Moss Rob Walker Racing Team Cooper-Climax + 2.8 s 2
3 Chris Bristow Yeoman Credit Racing Team Cooper-Climax + 1:05.0 s 1
4 Bruce McLaren Cooper Car Company Cooper-Climax + 1:17.6 s 6
5 Graham Hill Owen Racing Organisation BRM 41 laps 9
6 Jo Bonnier Owen Racing Organisation BRM 41 laps 10
7 Tony Brooks G.A. Vandervell Vanwall 41 laps 8
Ret Roy Salvadori C.T. Atkins / High Efficiency Motors Cooper-Climax Transmission 5
Ret Harry Schell Yeoman Credit Racing Team Cooper-Climax Throttle 3
Ret Mike Taylor Taylor & Crawley Lotus-Climax Engine 13
Ret Keith Greene Gilby Engineering Cooper-Climax 12
Ret Alan Stacey Team Lotus Lotus-Climax Oil pipe 11
Ret Dan Gurney Owen Racing Organisation BRM Accident 7
WD Jack Brabham Cooper Car Company Cooper-Climax -
WD Geoff Richardson Geoff Richardson Cooper -
csv/203-csv/670.tsv