The efficiency of a car power inverter depends upon its usage and capability to perform. But sometimes, you need to see the features and performances of the inverters to be sure of the products. If we are to pick the best 12V DC to 110V AC power inverters for cars and trucks, then choosing the Ampeak 2000W Power Inverter with 3 AC outlets and Krieger 1500 Watts Power Inverter (modified sine wave car inverter) with 2 AC outlets can prove to be beneficial for the truck owners because of their efficiency to perform. As truck owners are mostly traveling long distances, they need to be handy with their charging appliances while on the road. And these power inverters are actually suitable for the purpose.