The snow has to go somewhere. So if you shovel your driveway and then clear a space to the left of your driveway, when the plow circles back around, it will fill it!
Here's an easy way to get the snow off your car. Use your leaf blower! We found this one on Reddit and we think more than a few Mainers might try this with the upcoming storm on Tuesday, and again on Thursday. It probably works best on the light, fluffy stuff but as you can see from the video when your crank that leaf blower up it just blasts the snow right off!