1994 Saab 9000 CSE turbo with 175k miles. Driving along at 35 mph on a local road, all of a sudden engine dies. I pull over and try to start: it cranks, but no cigar. Walking around, I notice a nicely massive coolant leak. What I want to know is, how badly is it damaged. Does not starting mean I've blown a gasket? Could it be just the water pump? I am clueless, and would appreciate any answers.