Instead of wasting money on pungent air fresheners, you can use the alternative of candles. But instead of lighting it, leave an unlit, scented candle in your car when the sun is out. Reddit user churninbutter notes that some places get hot enough to melt some of the wax in a scented candle to release its smell. It probably won't work in colder climates, but it does create another option for people who can't stand the smell (and limited choice) of car air fresheners and prefer soft candly scents.