You had to make a camera look like it's traveling at 300 mph, but you couldn't make it actually travel at 300 mph so you had to slow everything down and build devices to do that. So you were constantly engineering.
I don't know; we'll see what happens with Brexit. If they make it so that you can't travel any more without a visa, I'm going to have to leave the country, stay in the E.U., and probably change my citizenship.
The first voyagers to the stars will be creatures whose life cycle is matched to the voyage: the aeons involved in traversing the galaxy are not daunting to immortal beings. By the end of the third millennium, travel to other stars could be technically feasible. But would there be sufficient motive?