Season Finale: Shark Wheel, Gato Cafe, Sway Motorsports, Spikeball

GoPro founder Nick Woodman returns to the Tank in the Season 6 finale: a cat lover wants patrons to enjoy adorable rescue cats while relaxing at a cafe; a toy designer has a thrilling all-electric compact vehicle; and is it possible that a duo has reinvented the wheel in the shape of a cube? Also: recaps and updates featuring various entrepreneurs that appeared in Season 6.