A microphone and a speaker allows customers to talk to bank clerks sitting far behind thick bulletproof glass. They could implement that on a truck.
Handing papers over is harder, but I wonder if making a small window that can be opened would be really hard. The driver would need to stand up, though.
Handing papers over is harder, but I wonder if making a small window that can be opened would be really hard. The driver would need to stand up, though.