Continuity mistake: Brian's number plate gets shot off at the end in the desert. However it reappears in a couple of shots in the tunnels. (01:28:00)
Continuity mistake: When the girl is asking for Dom's number at the end of the first race her hair is in her jacket in some shots and not in others. (00:43:00)
Continuity mistake: Dom lets go of David Park and Brian rushes forward to grab him. Dom vanishes instantly, for Brian to get past him. (00:29:50)
Continuity mistake: When Mia hugs Dom in the garage, her hands keep changing position and grasp on Dom's shoulder. (00:16:50)
Continuity mistake: When the truck driver shoots at Dom at the start, we see his window smash in on him. Camera changes and it smashes again, but this time it smashes out, on to the road. (00:03:50)
Continuity mistake: When Dom crushes Phoenix between the Camaro and Impreza, the hood of the Camaro is badly damaged and denting up. In every shot afterwards, the Camaro is just fine. (01:35:50)
Answer: When criminals transport large amounts of money, it is often wrapped in foil and plastic to protect it from accidental damage from liquids and fire. There is also an urban legend that wrapping it in foil will keep it from being detected by scanning equipment.
LorgSkyegon
Foil is also used to shield against RFID sensors which is a safety feature used to protect items.
Ssiscool ★