Visible crew/equipment: When Mia sees Brian coming into the house, she looks down at herself and decides to change. When she takes off her shirt and throws it at the camera, look at the mirror and you can see the cameraman's elbow just coming into shot for a few frames. (00:29:20)
Visible crew/equipment: In the final racing scene, when Dominic's car hits the truck and flips in the air, you can clearly see the stunt driver's helmet as the car turns in the air. (01:37:45)
Visible crew/equipment: At the beginning of the movie when it shows the first heist, when it shows the Civics going by, you can see a shadow of the truck/automobile that the camera is on. (00:01:30)
Visible crew/equipment: In one shot where Dom is trying to get Vince off the truck there is a very nice shot of the side of Dom's Civic in which you can see the camera people. (01:20:00)
Visible crew/equipment: During the SWAT raid on Johnny Tran, when SWAT breaks down the door, sending the top moulding flying, you'll see a hand come from the right side to ensure it doesn't hit the cameraman. (01:03:15)
Visible crew/equipment: At the end of the third act, when Diesel and Walker line up at the lights to drag the quarter mile beside the train tracks, you'll notice the reflection of two crew members appear in the back of the side view mirror of the Charger as they approach it to get the steadicam close-up of Diesel telling Walker that on green, he's going for it. (01:31:35)
Visible crew/equipment: When the Civics are trying to take the last lorry, you can always (well almost always) see stage lights in the black paint of the Civics. (01:20:00)
Visible crew/equipment: In the scene with the race with the Dodge Charger, the Dodge hits the truck, flips over, and the air filters sticking out next to the air intake disappear. In fact, the car used in the flip is a replica, with a fake intake stuck on top of the bonnet. (01:37:40)
Answer: There are two ideas of why the police did not come around. Firstly they might have found out after the car chase that Brian was an undercover cop so it would be more effective to allow him to try and discover information instead of going around and arresting Dom. The other idea is that the police might not have enough to arrest him. Dom was not the one driving when they found him and other than racing, it might be tough to arrest him.
Lummie ★
Cops are usually completely unaware of an undercover cop's identity. The more, realistic reason is that the cop didn't ID Dom and since Brian's car was later destroyed, there's nothing for them to investigate. Afterwards, they might ID Dom, but there's an investigation on him, so they'd leave him alone.