My Chevelle died on me today.....

[1970Turtle]

So I was at a stop light today and the Turtle just started idling very rough and my oil light kept flickering on and off then stayed on and the car just shut off and would not restart. After about two minutes of sitting at the stop light, and waiving at pissy motorist honking as they drove by, she started back up and drove perfectly find the rest of today. What the heck could that be? It has been sitting for a few hours now and I just checked the oil level and it's right at the full line on the dipstick. It does have a leaky rear main seal, but I wouldn't think that would cause the problem I had today.