The online racing simulator
what's so funny about it?
ups
Nor is this, but it is damn BEAUTIFUL!
Worth of watching!
Quote from STF :Not really hilarious but, this is the definition of AWESOME.
http://www.youtube.com/watch?v=Z8ut5ND3agI
2,862 parts if someone is interested.

Looks like it´s driven with a E-Motor (if I understand the description correctly).
This one is real running (with air). I also found a Video some time ago where somebody built a small Lego V8 into a Lego car which drove for a few minutes until it broke down

Ah... you can get the engines here: http://www.lpepower.com/

Edit: That V8 powered Lego car can be found on the site above :-)
Edit:

Hilarious video challenge
(3646 posts, started )
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