"Mr. Buddy" heater is an option. Designed for interior use. I bought one for my teardrop trailer but haven't used it. Runs on propane canisters. Should crack a window when using it. Available at Cabela's, Amazon, etc.

This system automatically shuts off if oxygen falls below a safe level, or if the heater tips over. It uses a 1-lb. propane cylinder for three- to six-hours of heating time.


I wonder if the 120-hour candles would generate enough heat to warrant the smoke.

Also I posted in the ongoing "winter car kit" thread about Reflectix. It's a cheap, extremely lightweight, easily portable means of insulating the window openings and keeping whatever heat is generated inside the vehicle. Here's my post from the other thread:

Going through camping gear this weekend I came upon a roll of Reflectix insulation that I'd cut in pieces to fit in the rear and side windows of my Honda Element. That is a popular and cheap method for warmth and privacy on the Element forum among those of us who have slept in our Elements on camping trips. The pieces roll up quite compactly and have been durable. The pieces, cut with scissors (not with precision) fit neatly in the windows, with light pressure.

A 24" by 25' roll took care of my rear and side windows with about half the roll left over (which I've used to envelop my cooler on hot days). For the windshield I use the sunshield that I carry all the time.

Am thinking that for winter road trips, especially with snow in the forecast, it would be wise to throw the Reflectix in the car. It cuts down markedly on drafts. Can't see out of it but I've always left the driver and passenger doors uncovered (and cracked for air) and the Reflectix still makes a notable difference in the rear.

$23

http://www.homedepot.com/Reflectix/h_d1/...catalogId=10053