What were we expecting from jetpacks though, really? Is it not more fair to suggest that the past was a little bit naïve about what it would take to operate a jetpack? They're still aircraft after all, at the very least you're going to need pilots license.
There's no "bicycle" of jetpacks, you've got three axis of movement and certain death in every direction but up, it's just not a tool that belongs in the every-man's garage.
I think the same can be said for the past's perception of what flying cars would be like. You don't see your average joe flying a helicopter to work, for the very same reasons you'll never see personal flying cars be ubiquitous.
There's no "bicycle" of jetpacks, you've got three axis of movement and certain death in every direction but up, it's just not a tool that belongs in the every-man's garage.
I think the same can be said for the past's perception of what flying cars would be like. You don't see your average joe flying a helicopter to work, for the very same reasons you'll never see personal flying cars be ubiquitous.