Brook & Brian help Mark vet four innovative products: a remote controlled lawn mower; a revolutionary digital guitar; an indestructible flashlight that powers your electronics; & a bike helmet that records brainwaves and stress levels when you ride.

Brook and Brian help Marc vet four new products: a vehicle that allows cyclists to reach highway speeds; a robot programmed to its owner; an electric fan that promises a red-hot grill in minutes; and the first-ever indestructible shoelace.