[WalterBright]

Which happened in free market countries, not unfree ones.

P.S. the assembly line (invented in a free market country) is not about rapid prototyping. Prototypes are not built on an assembly line.

[vimacs2]

Russia and China or do those not count?

[WalterBright]

Russia and China did not industrialize until well over a century later. Or are you saying Russia and China build prototypes on an assembly line? I'll need a reference for that!