"dennis@home" gurgled happily, sounding
much like they were saying:

I bought a diesel Rover 45 when they went bust. For a 3 1/5 mile drive
to or from our house, I am freezing waiting for the heater to come on
for the last 100 yards of the journey in winter.

Go outside ten mins before you start out, run the engine at idle for ~30
seconds, go back in and finish what you are doing. You will find it
heats up quite well.

Are you suggesting leaving the car idling for ten minutes? Or idle it for
30secs, then leave it for ten minutes?