Prior to the opening credits, Jon is seen turning and going in the opposite direction from the black sedan. The crash involving the sedan takes place over 30 seconds later. Jon would not have been able to hear the crash since he was too far away.
The black sedan, shown undamaged prior to the crash, is already damaged on the passenger side front before it hits the light green coupe, indicating a previously damaged car was used for the crash.
Conveniently, Timmy's bedroom has two beds in it so Pat can sleep in one of them.
No explanation is provided for Ponch's absence.
Sgt. Getraer tells Jon to take a car and pickup Bill McGuire at the airport and bring him the the Getraer's home. When Jon brings McGuire to the Getraer's home, Jon walks in wearing his motorcycle gloves, which he would not be wearing if driving a car.