It's the stuff of movies: a speeding car careens off a road and plummets into a deep ravine, bursting into flames. It's a smash Lab cliffhanger! Chuck and Gadget devise exterior airbags while Deanne & Nat try out stabilizing rods.

It's the middle of winter and a pregnant couple is stranded in a snowdrift. To help them escape - Chuck and Gadget try out a jet powered snowplow - while Nathaniel & Deanne prototype hot air balloons.

A car dives into a lake and sinks without trace. Chuck and Nathaniel float a wild idea using some cool technology to create an unsinkable car - while Deanne and Gadget find a way to rescue a woman falling from a cruise liner.