Brilliant.

From the project site:

Super Awesome Micro Project Factoids

• More than 500,000 LEGO pieces were used.
• The car engine is made from standard Lego pieces and runs on air!
• The engine has four orbital engines and a total of 256 pistons.
• Top speed is not very fast, around 20-30km (We were scared of a Lego explosion so we drove it slowly)
• It was built in Romania and shipped to a secret location in suburban Melbourne.
• It’s a Hot Rod design, mainly because hot rods are cool.

Just as I was discovering this link, my boys were playing with their pneumatically driven Lego Unimog—which I previously would’ve called giant.
[YouTube] [Via Lin Kayser & Uri Ar}