Back in 1978 I was driving a 66 Impala with 5 of my friends coming back from New York, we where using a brick for cruise control, it was 2am. We hit a dip in the road and Ron said look someone lost a wheel. We laughed about it till I looked into the mirror and seen no one around. We coasted to the side of the road without touching the brake, before the car dropped down on the drum. We never did find the wheel put the spare on with a lug from each of the other wheels.
BradC