Hi guys! I've been living in my tiny VW Polo from the start of May this year in order to save on accomodation costs(rent, utilities etc.) and i've been very successful so far, travelling around my country and doing odd jobs through online hubs and such. I've used a butane heater, which puts out 4k-7k BTUs so far, but it's a hassle because of the condensation.(The canisters are very cheap though, like 1,2 Euro in bulk/ each lasting 4-5 hours). My car is too small for a diesel heater setup. Having a kerosene lamp would put out toxic fumes. Using graveyard candles isn't efficient enough. Electric blanket would starve my car battery at -5C. Butane moisture will freeze at -5C, making it difficult to open windows and doors in the morning. Idk, i'm searching for cheap options since in 2-3 days the weather will drop from 4C to -3C and will remain constantly freezing. Is using mord blankets and such really the only solution?