There was a device that was on the news about 8 years ago they were using in cold cimates.
It was a SUPER insulated container bolted under the vehicle, and would STORE hot engine coolant for up to like 24 hours.
Start the vehicle, and it kicked into action, and would have HOT air blowing out the vents in under a minute or two.
I dont recall teh name of it, but if you lived in a cold climate, and couldnt "plug in" at night, Im sure it was great!
It was a SUPER insulated container bolted under the vehicle, and would STORE hot engine coolant for up to like 24 hours.
Start the vehicle, and it kicked into action, and would have HOT air blowing out the vents in under a minute or two.
I dont recall teh name of it, but if you lived in a cold climate, and couldnt "plug in" at night, Im sure it was great!