00:00The Quantum is a culmination in my lifelong dream to build a supercar.
00:06This is the Quantum GP700, and that 700 stands for both the 700 horsepower it produces,
00:34and the incredibly low 700 kilos it weighs.
00:37That's an incredible 1 to 1 power to weight ratio.
00:48It might look like a track car, and it does 0 to 60 miles per hour in just 2.6 seconds.
00:58That's only a fraction slower than a Formula 1 car.
01:02While you might think it took a whole Formula 1 size team to put it together, it was in
01:07fact built by one man, Jeff David.
01:10And perhaps most incredibly of all, not only did Jeff build this car himself, he built it
01:16in his shed.
01:17So my dream was to always build the Quantum.
01:22So I thought I would start with the best car at the time, the best roadster that I could
01:26buy, and that was an Aerial Atom.
01:31So I bought one, and I dismantled it, and then started modifying it.
01:36So I progressively altered the engine and the chassis and the drivetrain and the brakes to
01:41improve the performance.
01:43Eventually culminating in a car that weighed 700 kilos and had 600 brake horsepower.
01:49Having modified the Atom, Jeff used his knowledge to set about building the Quantum from scratch.
02:00Starting at the nose, we've got the hand fabricated front wing that I made.
02:06The design was based on a Formula 3 wing.
02:09And I shaped it to try and give a really narrow front nose.
02:15Come around here and you can see all the moulds.
02:19I made all the original panels for the Quantum in carbon fibre.
02:24As we've all seen at Formula 1 cars when they have an accident and the tracks strewn with
02:28carbon fibre all over, it shatters.
02:32So I experimented with various ballistics grade Kevlar weaves and aramid cloth and carbon fibre
02:39mixtures.
02:40This is the result.
02:41If Bez pants down to the ground and I tried this, and as you can see, it's unbelievably robust
02:49for carbon fibre Kevlar aramid cloth.
02:52The tyres are roadly or semi-sleak, the steering wheel is made, custom-made.
02:59Jeff's talent for custom making even extended to creating a bespoke engine for the car.
03:05The engine's evolved over many different versions.
03:09The overall result has been that it's progressive increase in power from the 300 brake horsepower
03:15where we started to 700 horsepower now.
03:18It's probably the highest powered supercharged engine in the world of that style, which is
03:27emission compliant and road legal.
03:31And Jeff even made sure the car was comfortable to drive.
03:34During the design process of the car, it was really important to me that the car was comfortable
03:44to drive on the road.
03:46And I applied suspension that I've developed over 30 years into a shock absorber concept
03:53on the Quantum.
03:55And that's actually worked much better than I ever expected it might have.
04:01It provides a comfortable, compliant ride on our very rough roads.
04:08The whole process was enormous, time consuming.
04:16I'd get up at 5.30 in the morning and curfew was enforced by my wife at 7 o'clock at night.
04:23And that was seven days a week.
04:25My wife was really lowly and she offered to provide the financial support for the family.
04:31She gave me a two year deadline so I was able to work full time for two years uninterrupted
04:37and to try and get the car finished.
04:40The component cost was about just over 300,000 US three years ago when the car was built.
04:46And it's approximately 1,800 hours to build the car.
04:50With a price tag that has definitely exceeded $300,000, Geoff's masterpiece isn't for Sal.
04:58Although he hasn't ruled out the possibility of building a new model if he found an eager customer.
05:04I just love the look of the car and the way it's turned out.
05:08The handling, the performance, the exhilaration.
05:11Every aspect of the car I really enjoy it and I really love it.
05:20...
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