Good point. "Out in the driveway" and away from the breaker box, a good heavy extension is a must. You can "cheat" (cheaper) and make one up out of Romex if you are careful not to abraid, kink, or drag it around, "for occasional use."
Also, "for driveway use" take a good look at where your breaker box is. If it's out near the side/ front, install a nice heavy 20a 120V outlet and breaker, just hang a weather proof box below the breaker box.
