A close call. Is there any way one round hole in the pant would let you rotate the wheel and check each lug nut in succession?
Probably the flat-out spookiest thing that ever happened to me was in the late 90s. I was driving to work in my '64 VW Notchback sedan. The one with a 1776 and a five-speed. About a half mile from my little cabin in the woods I made a left turn off a stop sign. About 50 yards from the sign, something came adrift. I got out and looked and on the left rear, all four* lug nuts were missing and the wheel was jammed up in the wheelwell. I even walked half-way back to the stop sign and never found even one of the lug nuts.
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I can conceive driving on as few as two tight lug nuts, but this was as if they all teleported into another dimension—simultaneously. I took one lug nut from each of the other wheels and put the wheel back on. I wasn't even late for work.
I still haven't figured that one out.
*I know, '64s have five lugnuts. This one was on a '71 pan.