So Prime and the rest of the Autobots enter the city and Shockwave's graboid knocks Prime's trailer away. Prime says something like "I can't fly without my trailer!" and for the next 10 minutes, no Prime. The autobots are fighting on their own; the skyscraper jack-knifes; and Prime finally shows up, kills the worm, and gets tangled up in some wiring, the Wreckers help to free him.... and he disappears for another 10 minutes, during which time the Autobots are captured and Q dies. What the hell?