How old are these dogs anyway? If they are under 2 years, best way is to spend more time working with them.
Choose a spot off the drive way, but within view. After you park the car, call them to this one spot, make them sit. After they have settled, give them a simple treat. No sit, no treat. You must be consistent. A treat doesn't always have to be food, but usually easiest and quickest.
The idea is to modify unwanted behavior. Since you are in the car, its tough to get them to respond to you. They may still run around the car until its parked, then go to the treat spot.
I'm sure you are familiar with hunting dogs. Does the sound of the gun scare off the dog? I experimented with ultrasonics to scare off the neighbors cats. I never really got the results I had hoped for, but did manage to get them to defecate elsewhere. The unfixed males still came around and sprayed occasionally. Thankfully, the neighbor reduce the population from about 17, to now just 5, and I seldom see them. He overpopulated his yard, and they needed a place to go potty, that wasn't already used. So, I got the overflow. I kept my dog inside with me, he wasn't much for chasing other animals (unless I told him too).