WTF??!! at 30,000 miles it would be the most improbable time for an engine failure. The most frequest times are when new (infant mortality) or progressively more frequest with much higher mileage. At 30,000 the engine is nicely broken in and should be running at best efficiency (bearing wise). The only thing that would cause this to happen would be a lubrication failure. You would get an indication of a loss of pressure though. Did this occur when the vehicle was up to temp or just right out on the highway with a cold engine (seen that before).
1992 Bonneville SSEi
White, grey Leather interior.
Tinted windows and blackouts on headlights.
Custom high flow exhaust, Everything replaceable - DONE
300 000 kms original engine, tranny 2 rebuilds.
Playboy Bunnies Embossed in Tint. Oh Yah!
Ever Seen a Polar Bear in a Snow Storm?