Never underestimate the power of Twitter. Without mentioning the word Lego, a single, purposely nebulous tweet attracted enough capitol to fund this full-size, working Lego hot rod. The brainchild of self-taught Romanian engineer Raul Oaida and savvy Australian marketer Steve Sammartino, the 256 tiny pistons arranged in four radial engines are powered by compressed air and propel the car to speeds of 12–18mph. Any faster and Oaida is afraid it might fall apart. Except for the air tank, gauges, and a few structural elements, the car is made entirely out of more than 500,000 Lego pieces. That’s around $60,000 in Lego.