Honey, I Shrunk the Kids S01E12 - Honey, I'm Streakin'

Wayne feels overwhelmed with the demands of work and his family so he invents something that will make him go from place to place in seconds. He sets the level on high and somehow travels at the speed of light. Jennings finds a copy of the invention and is traveling fast too and playing tricks on people. The two of them get stuck at hyperspeed and must use another Szalinski invention to slow their molecules.