Crews ejects an audio cassette tape during its "performance" and throws it out of the car window, but a view of the cassette in the street shows the clear leader found at the start/finish of the cassette rather than the dark-colored magnetic tape itself that the "performance" would be on.
(at around 30 mins) As Charlie is shown upside down in his wrecked car the camera angle through his car shows, several times, the lower front fender of the SUV that just hit his car with such force as to turn it upside down yet there is no damage to the SUV's lower front bumper.