VVME...
From one of R.S. post:
The bulb only moves in and out, their is a solenoid in the base of the bulb which when activated sucks the bulb in and reflects the light at a different angle, they aren't telescoping bulbs so they don't actually move up and down.
Myself, I noticed a slight difference in light-up areas, but if you are on a pitch black road actually the "high-beam HID" works rather well. I tested this out last night, you can see a further distance down the road, unlike the low beam.