Here's the second video in our series of maker profiles as part of the Red Bull Creation competition. In this installment, you'll meet Greg Needel, mechanical engineer, combat roboticist and toymaker. For last year's program he built a beer tap that senses the size of a glass and pours the perfect brew, and then went on to create a swingset-powered vehicle. This year, he continued the party theme with a robotic cooler. Bravo, Greg. Enjoy.