Email the Infiltec blower door guru today. So you can see that driving back and forth to the house will generally take much longer than the actual test. It takes only seconds to bring up the pressure in the house.
Most tests take longer because the tester generally explains the test to the occupant.
And after the test, you can spend a lot of time investigating just where the leaks are in the house. The typical test pressure is about 50 Pascals in metric pressure units, or 0.20 inches of water in US units. This is the pressure you feel when you are under a swimming pool by only 0.20 inches. It is the same pressure you feel when a 20 mile per hour wind is blowing in your face. So you can compare a blower door test to having a 20 mph wind blowing on all sides of the building.