I humbly disagree... All the practical pieces for a modern bike was attainable if someone with money, imagination and skill could have created it sooner than it was. I argue armor vehicles could have been created if the South or North had true R & D departments...
Our space program example of what I am talking about... All the pieces of it were available but it took bunch of money, forward thinking, a bunch skilled people to pull it off but they put us on the moor at least a generation sooner than it would have been.
Jet airplanes were a generation away until us and the Germans put money, imagination and skilled people to create them...
This vaccine we all waiting to get was again develop quickly because money , imagination, cutting red tape , and a bunch of bright people to create it years ahead of it time...