This is in the part when Max crashes the cab. Directly after Vincent runs off, it cuts off to Max getting out of the cab. If you look in the reflection of the hub cap you can see the red and blue flashing lights. Just by looking at it you can tell the cop car is to far off, and is also staying in one spot. Then apparently the cop car pulls up, hits on the brakes, and then the cop gets out to check it out.