If you believe in it.... they will make it happen.
I don't know weasel, if you're old enough to remember, but when Dick Tracy came out back in the 30's.... telephones weren't near as advanced as they are today, but he had a two-way wrist watch cell phone built in the 40's. In the early 60's it also had a camera in it. Sounds like the comics were decades ahead of the real world and it took some time for the world to catch up.
Flash Cordon the same thing. He was riding around the galaxy in a rocket that was so advanced for the time [again in the 30's] and the closet thing to it became available to England in the mid 40's by way of the Nazi's and the V2 rocket from the late 30's but not fully developed until 1942. One difference, the Nazis didn't carry people and couldn't go all over the place like Flash.
If you can imagine it... they'll eventually build or make anything.