Would this be a great idea for banks to use to stop bank robberies?

HERE IS THE IDEA: The bank is built but the car companies take those robot car builders they make armored cars with, and fit them to build an inner shell wall/pulley system for the bank... so if it is robbed, the robber come to teller window to rob bank, but the teller pushes a secret on and the whole teller office on the other side goes down like an elevator, meanwhile, where the robber is standing turns into a sectioned off cage where he is lifted up to the ceiling... tellers go down elevator, robbert is hoisted where he stands up to the ceiling until police come! Car companies can help build the bank, draw the design and then no one is hurt, why won't they do this??????