<div><p><i>The LEGO Power Functions Idea Book, Vol. 2: Cars and Contraptions</i> shows readers small projects to build with LEGO's system of gears, motors, gadgets and other moving elements. The book is filled with hundreds of buildable, clever mechanisms that demonstrate a key technique or mechanical principle.</p><p>Follow along and build four-wheel drive cars, adorable walking 'bots, steerable tanks, robotic inchworms, and cars that can follow the edge of a table!</p><p>And just by building, you'll explore the principles of gearing, power translation, differentials, suspensions, and more.</p><p>Imagine. Create. Invent. Now, what will you build?</p></div>