As this latest episode of vascular spasms woke me up and feels closer to the real thing, I've asked the friendly folks at 9-1-1 Limousine Service to arrange a pick-up. Hope we don't wake the neighbors.
[12:30 PM UPDATE:] As always, the 9-1-1 Express limousine ride was delightful, although I can't recommend it as an economical form of transportation. After some tests, an increase in the vasodilator was ordered and I was sent on my merry way. Fortunately, my neighbor who walks with me most mornings arrived as we were departing, locked up for us, and later came down to the hospital just in time for my release so I had no problem getting home.