Jonah: “Double-decker bus” is very apt. It used to be the case (at any rate in the provincial town I grew up in) that the lower deck was non-smoking. My Dad, who was a smoker (Senior Service, unfiltered of course), favored the upper deck. One of my earliest memories is of Dad carrying me up the narrow winding stair to the top deck of a municipal double-decker. That was in the old, free, England. Where’s my hankie?

Dad died at age 85, in robust good health to near the very end.