The Destroyers are powering their car with a pulse-jet engine which has no moving parts. Fuel (in this case propane) is fed into a chamber and ignited. The hot air rushes out two ends of a bent pipe. It also creates a vacuum which sucks air back into the chamber where it's ignited by the fuel and rushes back out, creating pulses of thrust (up to 60 times a second). They also plan to fabricate most of their parts which will take precious amounts of time.

The Ging Gang Goolies are going with a turbo-jet. A fan turns and sucks (and compresses) air into a sealed chamber where it's mixed with fuel (again, propane) and ignited inside the chamber. The hot gasses travel out the back of the turbo and through a tapered pipe which pushes the car along. Time is against them in this difficult build and finding a turbo, probably on some sort of diesel engine, could take a lot of time.

Ging Gang Goolies Expert Nick Haddock	Destroyers Expert Bruce Simpson
The Goolies' Turbo Jet	The Destroyers' Pulse Jet
The wheels and steering from this 'granny scooter' are perfect	As is this table which they will cut down and use as a chassis
The Goolies are waiting for their scavengers to bring anything back	A bit of tubing is a start but they're going to need more materials
A tractor will only give up it's steering assembly...nothing more	Judge Richard Noble
By rolling steel through a press, they can make some tubing easily	The Goolies need box steel, which the Destroyers trade for a 90o pipe
The Goolies test out the strength of their chassis which holds up	The combustion chamber is fitted atop the turbo charger
This is an afterburner. By igniting  kerosene in the exhaust, it burns off more gas and increases thrust	These 2 bends are necessary to make the double-ended pipe to get the most from their pulse-jet
A leaf blower will be used to get  the turbo up to speed

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