The team tests measures which can ease injuries for passengers of a speeding car which careens off a road and then bursts into flames as it plummets down a ravine, includes Chuck and Gadget using airbags on the vehicles exterior, while Deanne and Nat use stabilizing rods.
The team uses a reactive-armor technology and a metal-aluminum foam to make a car which can survive a 55-mph hit to the front and side.
Chuck and Gadget help rescue a pregnant couple stranded in a snowdrift with the use of a jet powered snowplow. Plus, Nat and Deanne develop hot-air balloon prototypes.
Chuck and Nat give ideas for building an unsinkable car, while Deanne and Gadget look for ways of saving a woman who has fallen from an ocean liner.
The team works on ways to stop a hijacked 18-wheeler, including jamming the wheels and using aircraft carrier technology.
The team finds themselves trapped upside down in a boat, inspired by the motion picture "The Poseidon Adventure." Chuck and Gadget work on building a collapsible submarine, while Deanne and Nat cut their way free.
An accident with a logging truck has the team using vacuum power and motor racing to keep a truck from crashing again.