Table:
text: 1975 French Grand Prix
Classification
Classification
Driver Constructor_ Laps Time_Retired Grid
Mark Donohue Penske - Ford 6 Transmission 18
Tom Pryce Shadow - Ford 2 Transmission 6
François Migault Williams - Ford 0 Non Starter 24

text: 1975 French Grand Prix
Classification
Classification
Driver Constructor_ Laps Time_Retired Grid
Jean-Pierre Jabouille Tyrrell - Ford 54 + 1:37.13 21
John Watson Surtees - Ford 53 + 1 Lap 14
Carlos Reutemann Brabham - Ford 53 + 1 Lap 11
Gijs Van Lennep Ensign - Ford 53 + 1 Lap 22
Alan Jones Hill - Ford 53 + 1 Lap 20
Bob Evans BRM 52 + 2 Laps 25
Lella Lombardi March - Ford 50 + 4 Laps 26
Carlos Pace Brabham - Ford 26 Transmission 5
Jacky Ickx Lotus - Ford 17 Brakes 19
Wilson Fittipaldi Fittipaldi - Ford 14 Engine 23
Vittorio Brambilla March - Ford 6 Chassis 8
Clay Regazzoni Ferrari 6 Engine 9

Question: What is the time/retirement when the laps are 6, the grid is less than 18 and the driver is Clay Regazzoni (1975 French Grand Prix)?