He studied
Production Engineering at the University of Derby and became an early employee of
Toyota at its factory at nearby
Burnaston, where he rose to be a general assembly manager before moving to General Motors in 1995. For GM, Slym worked first in the former East Germany as a "lean manufacturing" adviser in the
Opel factory at
Eisenach in
Thuringia — which had previously built the
Wartburg saloon, the so-called "
Mercedes of the East". From there he transferred to
Poland as director of manufacturing at a new Opel plant in
Gliwice, and in 1999 he moved again, to
Canada, to become manager of a GM plant at Oshawa in
Ontario. After his MS at Stanford University in
California in 2002, returned to Canada, then did a stint in
South Korea before being appointed in 2007 to be general manager of GM in India, where the US giant had previously achieved only modest market penetration. Before being headhunted by Tata Motors, Slym spent nine months as executive vice president of SGMW Motors, a GM joint venture building small commercial vehicles at
Liuzhou in south western
China. ==Personal life==