Somebody made me laugh by comparing the Brexit ballot to a Schrödinger-type wave function, which exists in various virtual states. In other words, it meant all things to all men - keep the foreigners out, sovereignty, take our country back, money for the NHS, and so on.
However, Mrs May is gradually collapsing the wave function - money for the NHS? No. Points based immigration scheme - forget it. Paying money to the EU - well, we might.
Apologies for the hopeless miscomprehension of wave functions.
The obvious solution, if the Japanese leave (what have they ever done for us?), is to rent a large empty factory, and start building the Austin Allegro again! Glorious!