Converting your car to run on water (HHO)

[rodney142]

I found this classified ad on ebay today about converting your car to run on water DIY style.
Anyone think it will work?

I might give it a go, but I'm not 100% sure i'd be able to do it myself.
What do you guys think?

Heres the ad http://cgi.ebay.com.au/ws/eBayISAPI.dll?ViewItem&item=220448858086