No. Just no. The first time an appliance with a big motor (or fridge compressor) kicks in, you will likely toast your inverter or your car. Even if the smoke doesn't come out, your voltage will brown-out. A car with a long 12v cable IS an excellent choice for recharging 12v batteries & running 12v electric blankets, lights, USB chargers, and any other camping / automotive kit you might have.