Review on Fast Heating Portable Car Heater 12V 150W - Defroster & Defogger, 2 in 1 Cooling Fan - Winter Car Heater, Easy Plug Into Cigarette Lighter by Jeffrey Johnston

Good car heater. Just don't expect magic. This helps warm up the car before the engine is hot enough to take over. It helps more if you start it with remote start a few minutes before entering. But in general everything helps when the temperature drops. At least there's some warm air to warm your hands after the snow has been shoveled.