They're a great fit for a town like Nagasaki, though: too small for a full-blown subway, a bit too big and hilly for walking, and with a geography that severely limits the number of major road routes.
Hence the Nagasaki Electric Tramway, which is something of a tourist attraction in its own right.
Plus, if you ride out to the end of the line, you get little treats like this.
The Educated Burgher on the stunning public buses of Malta.
Today's Japanese Lesson (offered at the request of a loyal reader):
Nagasaki-eki-ni ikimasu ka?
"Nagasaki-station-to go [question]?"
(Does this tram/train/bus/dirigible) go to Nagasaki Station?