Paul, the only way to fix your drive is to rip it up,turn it over, regrade and then put a roller over it.
Any hole you have now will simply reform again if you keep filling them.
Also, somehow enforce a speed limit .
I have tried on mine and failed.
Speeding vehicles will trash a driveway.
Best equipment a grader and multi tyred roller.
If you put gravel over it then, the best tool may be a box grader.
Watch box grader