From CHiPs Online:
After Jon buys lemonade from the kid with the wagon, watch his hands. He first pats the unknown woman on the back and then plays with someone's hood ornament.
During the final tanker truck chase when the pipe is loose and gas is spilling all over the road, the gas can be seen in all the camera shots except for the ones where we see the view from the tanker.
When the tanker crashes into the house, the tank doesn't explode...the house does. The truck most likely runs on diesel...which only burns under pressure. Therefore, the truck cab couldn't have caused the explosion. The tank (with the leak of - most likely - unleaded gasoline) should have been what exploded.
(After Getraer's accident and post-opening credits)Ponch: Hey Joe, can you hear me?
Getraer:(Faintly) Frank Poncherello......one of my finest officers.
Ponch: He's delirious, get him outta here!