00:01The Quantum is a culmination in my lifelong dream to build a supercar.
00:20This is the Quantum GP700, and that 700 stands for both the 700 horsepower it produces, and
00:28the incredibly low 700 kilos it weighs. That's an incredible 1 to 1 power to weight ratio.
00:41It might look like a track car, and it does 0 to 60 miles per hour, in just 2.6
00:48seconds.
00:52That's only a fraction slower than a Formula 1 car, while you might think it took a whole
00:58Formula 1 size team to put it together. It was in fact built by one man, Jeff David.
01:04And perhaps most incredibly of all, not only did Jeff build this car himself, he built it in his shed.
01:13So my dream was to always build the Quantum, so I thought I would start with the best car at
01:19the time,
01:19the best roadster that I could buy, and that was an Aerial Atom.
01:24So I bought one, and I dismantled it, and then started modifying it.
01:30So I progressively altered the engine, and the chassis, and the drivetrain, and the brakes,
01:35to improve the performance, eventually culminating in a car that weighed 700 kilos,
01:40and had 600 brake horsepower.
01:42Having modified the Atom, Jeff used his knowledge to set about building the Quantum from scratch.
01:53Starting at the nose, we've got the hand fabricated front wing that I made.
02:00The design was based on a Formula 3 wing, and I shaped it to try and give a really narrow
02:07front nose.
02:08Come around here, and you can see all the moulds.
02:12I made all the original panels for the Quantum in carbon fibre.
02:18As we've all seen at Formula 1 cars when they have an accident,
02:21and the track's strewn with carbon fibre all over, it shatters.
02:26So I experimented with various ballistics grade Kevlar weaves, and aramid cloth, and carbon fibre mixtures.
02:33This is a result, if Bez pants down to the ground, and I tried this, and as you can see,
02:41it's unbelievably robust for carbon fibre Kevlar aramid cloth.
02:48The tyres are roadly or semi-sleak, the steering wheel is custom made.
02:53Jeff's talent for custom making, even extended to creating a bespoke engine for the car.
02:59The engine's evolved over many different versions.
03:03The overall result has been its progressive increase in power from the 300bhp where we started,
03:10to 700hp now.
03:14It's probably the highest powered supercharged engine in the world of that style,
03:19which is emission compliant and road legal.
03:25And Jeff even made sure the car was comfortable to drive.
03:33During the design process of the car, it was really important to me that the car was comfortable to drive
03:39on the road.
03:40And I applied suspension that I've developed over 30 years into shock absorber concept on the Quantum.
03:49And that's actually worked much better than I ever expected it might have.
03:55It provides a comfortable, compliant ride on our very rough roads.
04:07The whole process was enormous, time consuming.
04:11I'd get up at 5.30 in the morning and the curfew was enforced by my wife at 7 o
04:17'clock at night.
04:18And that was 7 days a week.
04:19My wife was really lowly and she offered to provide the financial support for the family.
04:25She gave me a 2 year deadline so I was able to work full time for 2 years uninterrupted and
04:32to try and get the car finished.
04:34The component cost was about just over 300,000 US 3 years ago when the car was built.
04:41And it's approximately 1800 hours to build the car.
04:45With a price tag that has definitely exceeded $300,000, Jeff's masterpiece isn't for sale.
04:52Although he hasn't ruled out the possibility of building a new model if he found an eager customer.
04:58I just love the look of the car and the way it's turned out.
05:02The handling, the performance, the exhilaration.
05:05Every aspect of the car I really enjoy it and I really love it.
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