Of course it can... but Apple's cash is Apple's cash, and will be tracked throughout its journey from bank to bank and accounted for in every step of its transfer with GAAP accounting rules, or officers of Apple will be going to prison for a long time, not to mention $20 million personal fines. The Sarbanes Oxley Act of 2002 and the SEC will see to that.
There is no reason for Apple to sneak currency around on planes. Apple ships iPhones on planes by the pallet load. . . but those pallets are not that size. I've seen them.
What ever that is in the Q photo appears to either be in a land and sea box or a semi-truck trailer.
Not a semi-trailer, it is a 40ft shipping container. They normally don't have plywood on the sides so that could indicate it has isulation behind the plywood?