If it is a company car, get the rego number and call his boss. Companies do not like bad press. Tell the company that if the car continues to park across your driveway (which is illegal), you will inform the local council so they can have a council officer waiting for him the next time he parks there and he will get a fine. Otherwise tell them you are going out to buy a banged up old car and the next time their nice company car is parked across your driveway you will reverse the banged up car straight into it.

Pump Corp company car. Parks in our business car park, in front of the gate, blocking it. Ignores the please do not park here sign All so his mate can go across the road. He then sits there eating his lunch. Dopey lot.