Originally Posted by froze
The bottom photo would be way too bright for my taste, it hurts my eyes just looking at the picture!
Too bright eh.. well I know how some people like to brag HID this, HID that... Here it is, the 500 watt bike light:
http://home.arcor.de/schymik/Lampen/Lampeta.htm

Roughly translated from german:
Stomquelle: Generator
Shining means: 500Watt halogen emitter
Achievement of the light: 500 W
Weight of the Agregats: approx. 20 kg
Rated output: in addition, 600 W straight so 2 * 500W halogen headlight creates
Burning duration with 1 tank filling approx. 2-3h
Weight leuchte+ of the mounting plate approx. 2kg
Training effect: above average highly
I'm thinking he has a 1.1kw generator on the back and is using only 500watts of it. I suppose he can hook up a 1000watt HID bulb. 90,000 lumens of light. I think the brighest bike 16watt HID only has 900 lumens.