Where have all the flying cars gone?

The Slacktivist is asking an open question about the future and where are all the flying cars, just as I have ranted about before. There is even a song by Daniel Amos in which he expresses the same concerns.

Here is the first verse which captures my frustration of what's missing in our cold distoptian future exactly:

(It's the Eighties, So Where's Our) Rocket Packs

from the album "Vox Humana"

Words and Music by Terry Taylor
©1984 Twitchen Vibes Music (ASCAP)
It's the eighties
It's the eighties so where's our rocket packs
It's the eighties so where's our rocket packs?
Go anywhere, we strap them on our backs
1. (It's the eighties so where's our rocket packs?)
I thought by now I'd walk the moon
And ride a car without no tires
And have a robot run the vacuum
And date a girl made out of wires
No thing's don't change that much, do they?
We are still out of touch, by now we should discover
Just how to love each other, like Klaatus' robot man
Your looks have killed again

I do have a robot that runs the vacuum, but the rest is sorely lacking.