In article , williamwright
writes
On 14/04/2021 00:34, Dave Plowman (News) wrote:
We had vans at work with diesel burning cabin heaters. That got the cab
warm far quicker than the coolant fed heater.

Big lorries generally have one. It's necessary for sleeping in the cab
or for for the long waits at the docks.

Bill
Got one in my campervan. Brilliant.
--
bert