[bbbbb5]

Pretty sure most people with block heaters have these, they run off the same power source https://pic.beely.crasman.cloud/BVC-228/BVC228_11.jpg

Almost all ICE cars I've seen sold in Nordic countries during the past 30 years have an outlet on the passenger side to power these. I think these have been a thing since the 70s though.

[zoklet-enjoyer]

I've lived in North Dakota for almost 30 years and have never heard of this