Question: SPOILERS. We learn that when Vin Diesel and Paul Walker are driving across the bridge, the vault that they are dragging is empty. If this is so, why didn't they both just disconnect and run instead of Vin driving back and causing a huge pile-up? They had the money and dragging an empty vault didn't solve anything.
GalahadFairlight
20th Oct 2011
Fast Five (2011)
Answer: Along with putting a stop to Reyes and all the dirty cops, they needed everyone (including Hobbs) to believe that was the real safe, so they could get the actual safe somewhere secure to be able to open it and quietly divvy up and go their own ways.
Chosen answer: Dom wanted Reyes dead, the only way that was going to happen was for the chase to be concluded, and for both Dom and Brian to be caught up by the Police who were in Reyes' pocket. Reyes naturally would think he was safe going near Dom and Brian because of the Police presence.
GalahadFairlight