Jack throws away the piece of fruit as he's arguing with Mac and Riley. A few moments later, when Mac shows the monkey the Swiss Army knife, the fruit is back in Jack's hands.
The rogue vehicle speeding along the highway never seems to pass other vehicles and yet when MacGyver steals the Camaro he passes some. Later when MacGyver jumps on to the rogue vehicle the 3 fighter jets are lining up for their strike run there are 2 cars in front of the rogue. If they had fired on the rogue vehicle these 2 cars would have been hit as well.