This is genius:

[killercanuck]

push button to turn your handlebars 90 degrees, then they lock back:

Not only can handlebars poke passers-by, but they also have a tendency to whack into door frames, and they prevent your bike from resting stably against walls. Loosening your handlebar stem and turning the bars parallel with the front wheel, while addressing the problem, is likely more work than most people are interested in doing on a daily basis. With the new flipphandle stem, however, riders can turn their bars sideways with just a press of a button.

He's prototyping them for $75 at the moment, but once he gets going the price should drop. Keep your eyes open for these!

Here's the creator's site, he has a vid too: Here

Where I saw this

 

[joabthebugman]

Having limited storage issues I like the idea, but what are the chances of malfunction and the bars flipping at speed

 

[mapbike]

Yep joabthebugman,

That push button design scares me too, I'd rather have a knob that could be unscrewed which would allow the handlebars to be lifted up just far enough to clear a lug that would guarantee it was secure when the knob was tightened down, that would be an easy way of doing it and much less possiblity of a malfunction that would guarantee a serious face plant at 20-30MPH.....eeeek! not a pretty picture IMHO

Peace