The story looks like it has something to do with Dom – and Brian, no doubt undercover – helping a seedy crowd transport some goods (it doesn’t say what it’s in the goods just that they were in ‘large polymer cases’) to an undisclosed location (everyone’s car has been fitted with a GPS that’ll guide them to the drop-off point). As soon as they leave their location, to evade the authorities, all the drivers have to put ‘metallic car covers’ over their rides so that choppers can’t pick up their heat signals. The choppers zoom over head, but they can’t seen anything but darkness. As soon as the choppers disappear, they’re off and racing!