When Cory was leaving her friends house, she told her to give her 20 minutes to get home & she would call her & they could talk. The next morning she made no mention of the fact that she tried to call but couldn't reach her friend.
At the junk yard when Chris is chasing the car thief (she is riding her bike) her sunglasses are on, then they are off then they are on again. Three different face shots within about 3 seconds of each other. Somehow I doubt she would take off her sunglasses and put them back on again during a high speed chase.