I can not tell you how many discussions I have had with my friends about how f'ing rad it would be to drive an Indy car on public streets...  well this might be my best chance, who do I need to contact to get a test drive?

The Caparo T1 is an ultra-lightweight 2 seater sports car designed by former members of the McLaren group and intended to reach production in late 2007, for a price of approximately ?190,000 (GP pounds)

Formerly known as the Freestream T1, the design was envisioned as a road-legal car with performance approaching that of a Formula 1 race car, though in practise it is closer to a GP2 car.
The cost of the car in USD$ at the time of writing would be $375,000 if converted directly from the GBP? figure.
Caparo V8 engine specification:
. Bespoke 3.5 litre normally-aspirated fuel-injected V8
. 575bhp (425kW) at 10,500rpm
. 420Nm (310lbft) at 9,000rpm
. Original concept tested at up to 700bhp (515kW) on methanol
. Limited to 10,500rpm for reliability but designed for maximum 12,000rpm
. 90 degree V8, 4 valves per cylinder, 4 overhead camshafts
. 93mm bore / 64.3mm stroke
. Finger follower valve train system
. Lightweight titanium valves
. Aluminium head
. Aluminium block
. Steel billet 'flat plane' crankshaft
. Internal piston cooling system
. Aluminium / Nikasil liners
. Gas filled ring cylinder head sealing system
. Dry sump with one-piece sump / ladder frame for increased stiffness
. 8 butterfly throttle system
. Electronic sequential fuel injection system with twin-spray fuel injectors
. Engine concept is essentially to Indy racecar specification but with revs dropped to 10,500rpm for extended reliability in Caparo T1
. Pectel SQ6 engine control unit (ECU)
. Engine is fully stressed but installed in T1 to take torsion loads only
. Longitudinal, lateral and vertical loads taken up by tension and compression links to the rear of the chassis
. Engine runs on 98RON pump fuel at a fuel pressure of 5bar
. Fuel system is a return top tank system to eliminate fuel vapourisation
. Engine bottom end modified from race engine specification to increase main bearing tolerances and help cold start of the engine
. A bespoke carbon air-box and filter tray has been designed and installed to suit the Caparo T1
. Air filter is a mesh and washable filter system
. All up engine weight with ancillaries is circa 116kg
Caparo T1 vehicle specification
Overall description
. Advanced technology composites for ultra lightweight construction
. 575bhp V8 engine / 550kg kerb weight
. 1,045bhp-per-tonne power-to-weight ratio for ultra high performance
. Fully tuneable aerodynamics
. 2-seater
. Rear mid-engine layout
. Built for discerning customers but also technology flagship for Caparo Vehicle Technologies - demonstrating principles of lightweight vehicle design which can also be applied to everyday cars
Aerodynamics
. Front cockpit road aero screen, other options available for track use
. Ground effect diffuser
. Adjustable front twin element wing
. Adjustable rear single element wing
. Adjustable fowler flaps
. Low drag body design
. Range of wing options for road and track
Steering
. Magnesium cased lightweight high ratio steering rack
. Bespoke removable steering wheel
Capacities
. Dry sump tank 8 litres
. Fuel tank 70 litres
Body
. Carbon fibre multi part body with tuneable aerodynamics
. Designed in sections for easy repair
. Carbon/glass and Nomex panel construction
Chassis
. 2-seater carbon/aluminium honeycomb monocoque
. Separate front composite crash structure
. Rear tubular aerospace grade steel space-frame
Suspension
. Streamline double wishbone front and rear
. Tuneable front and rear anti-roll bar
. Five-way adjustable race dampers
Safety
. Central safety cell with high strength steel roll hoop
. Composite front crash structure
. Head protection system
. 6-point harness for driver and passenger compatible with HANS (head and neck restraint system) device
. Fire system
Electronics
. Fully tuneable engine ECU
. Bespoke wiring aerospace grade loom
. Multi-function race dash including data logging
. Speed sensors for traction and launch control
. Fly-by-wire throttle for optimum tuning
Gearbox
. Bespoke magnesium pneumatic paddle-shift gear change
. Paddle-shift gear change control
. Limited slip differential
. Equal length hollow tripode driveshafts
. Various gear and final drive ratios available
Brakes
. 355mm diameter steel race discs front and rear
. Fully floating discs
. Front 6 pot billet machined race callipers
. Rear 4 pot billet machined race callipers
. Fully adjustable brake bias pedal box
. Pad compound options available
Equipment
. Road legal SVA approved road version and full track versions available
. Road and track parts fully interchangeable
. Wet weather canopy/bib screen or race screen
. Further bespoke options to individual customer requirements
Weight
. 550kg (dry weight)
Performance
Expected performance figures:
0-96km/h (0-60mph): <2.5 seconds
0-160km/h (0-100mph): <5 seconds
0-160-0km'h (0-100-0mph): 8.5 seconds
Maximum Speed: >322kmh (200mph)
Braking deceleration: Up to 3G
Cornering Forces: Up to 3G
The three latter figures are however greatly affected by the configuration of the adjustable aerodynamics setup of the car. The expected overall performance is close to that of a GP2 Series race car.
The T1's power to weight ratio (1045bhp/tonne) is more than double that of the Bugatti Veyron (506bhp/tonne).