Will I see one of these cool batter-powered flying human-carrying electric quadcopter-type vehicles?

Vehicle requirements:

1) must be some kind of copter-like thing having blades (not jets, not propellor)

2) must be battery powered

3) must have a human passenger

4) it must be flying, not parked or for sale somewhere

I keep my eyes peeled for interesting things as I drive around, mostly about 30 miles a day in San Mateo CA but also driving trips to Utah, LA, etc.

Also: if I heard that there was one flying near me I would be likely to try to drive over and see it, up to say an hour away.