In the beginning of the episode Jon and Ponch are stopped on the shoulder behind the car and tow truck. Behind them, with no explanation, you can see a car stopped on the shoulder facing the wrong direction and at an angle, yet it is never mentioned.
Ponch and Jon wait at the Sepulveda Boulevard exit of the San Diego Freeway (I-405) for the suspect driving the stolen car, yet when they give chase on surface streets, they pass a freeway sign for the Foothill Freeway (I-210) east. Soon thereafter, they are chasing the suspect through Chinatown, which is near Downtown Los Angeles (a freeway sign for the 110 is visible in the background), many many miles from anywhere that Sepulveda Boulevard crosses the 405 (either in the San Fernando Valley or in Culver City).