How to build a 1,024,000 mcd portable light

For anyone thinking about night riding this might be of interest:

How to build a 1,024,000 mcd portable light.

You've just built a bike light which is brighter than most car headlights and weighs in under two pounds with batteries.

Sounds good

Not sure how viable it is though, esp. reading the comments below the main article, but might be worth a look anyhow.