In a cost-saving measures, Michael Bay has demonstrated what creative editing, good camera coverage and the excellent work by ILM can do with a scene. It is most likely resulting in re-recording purposes director from 2004 The Island for a few seconds of the sequence highways in Transformers: Dark of the Moon.
See the difference between this movies:
So,this is what I can say "recycling" to reduce cost of shooting this movie and avoid an accident happen from dangerous scene play.