Linda Fox wrote:

Husband reading over my shoulder says it was a regular thing in
certain parts of Canada when he was there in the 70s, that every
parking space at work had a socket. An anti-freze thing rather than a
keep-you-warm-while-you-drive thing.

Some cars also used to have small diesel space heaters along the lines of
http://www.eberspacher.com/airheatin...ion=airheating for the
interior. AIR, it used electrically-pre-heated diesel to ensure a start
in all weather conditions and was mounted in the boot. Or, as they called
it, trunk. g

--
-blj-