Motor died while running, now no-start

[VetteMed]

Took the Z out this morning, was running really well - probably the smoothest it has run since I bought it. No sign of any issues for the first 3 or 4 miles. Stopped at a light, then took off gently. got up to 30- 40 mph or so, then nothing - pushed in the clutch and the motor was dead. There was no warning, no stumbling or hesitation.

It cranks just fine, but doesn't fire. Just got a tow back to the house, going to let it cool off a little and start troubleshooting, I suppose...