Other mistake: When Cade is fighting Savoy, Cade jams his thumb deep into Savoy's right eye socket. A moment later Savoy is seen with no right eye injury.
Other mistake: During the introduction of Attinger, he is holding cards of the Autobots explaining what happened to them. One such card is of Ironhide, listed as last seen in Chicago. Ironhide was killed in Washington DC at NEST headquarters by Sentinel Prime in Transformers: Dark of the Moon. He didn't even participate in the Chicago battle.
Chosen answer: There is no reference. 900 STRA was just the number plate of the car he adapted from.
Casual Person