Well, to tell a short story about Rob Slotemaker isnt that easy. His life was full of great adventures, so stories and annecdotes abundant.
In short:
Born in 1929 in Indonesia
Joined the dutch Air Force and followed many trainings in the US
(he flew a plan even befor he knew how to drive a car!). During the winter time as the air base was closed due to snow and ice, he often took his car to spin it and learned in the process that he could also correct the car. A practice he learned to master.
Made racing debut in the Rally Montecarlo 1954 with friend Erik de Stoppelaar (they finished!)
1955: started his infamous skid school at the Zandvoort race track (today it is still there in modern facilities and in full swing).
1964-1965 F3: was the first driver for the DAF F3 project, he drove the Alexis and Brabham. Did a great amount of testing.
Participated in many rallies, also in the London-Sydney Marathon with Daf.
Le Mans 1961 with Les Leston in Triumph TR4/S (11th)
Le Mans 1962 reserve wit Ted Lund and the TVR Grantura of TVR Cars
Le Mans 1964 with David Hobbs in Triumph Spitfire (21st)
Le Mans 1965 with David Hobbs in Triumph Spitfire (DNF)
Le Mans 1968 with Teddy Pilette in Alfa Romeo T33/2 Team VDS (DNF)
Le Mans 1969 with Teddy Pilette in Alfa Romeo T33/2 Team VDS (DNF)
Le Mans 1970 co- drove the Solar Porsche 908 camera car (in practise only)
1968-1969 many endurance races with Teddy Pilette in the Alfa Romeo T33's of Team VDS
1970: advisor and one of the drivers for the film 'Le Mans' (he was capable to make a sports car spin at high speed and end up in the same (driving) direction. He made a nice pirouette with the yellow Chevron and you can see him climb out of the car in the film.
September 16th 1979 fatal crash in his Camaro at the Zandvoort track.
Basically you should not ask what he drove, ask what he hasn't driven. He didn't do F1, still there was a mystery entry by Ecurie Maarsbergen for him for the Dutch GP.
Lammers is his most famous pupil. Another one was Wim Loos, who was seen at Zandvoort by Franco Lini. Lini was so impressed that he mentioned him to Enzo Ferrari who was looking for talent. Loos lost his life at Spa during the 24 hours, after he had received an invitation to test at Ferrari with another young talent, a certain Jacky Ickx...
Have a look at this clip where Rob Slotemaker skids along Zandvoort in winter time with famous dutch journo Henk Terlingen (Apollo Henky for he also commented the Apollo moon landings on dutch TV, next to racing). Many students did only see the track through the side window when the master was driving!!
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