Here at GeekDad, Fritz and Stephen have a special place in our hearts. The EepyBird duo single-handedly exalted the Coke and Mentos internet fad to a pinnacle of geek experimentation, humor, and art. Back in 2010, we showed you they were using their mastery of fizzics to solve the world’s transportation problems. Recently they revealed to the world their Coke Zero & Mentos Rocket Car: Mark Two and raced it against their first prototype. Watch out Tesla Motors, EepyBird is strong!