We've written a lot about the Caparo T1 supercar - an aluminium V8 in a carbon fibre tub designed by former McLaren employees to simulate an F1 car on the road. When the Stig ran the T1 on Top Gear's test track, it beat all previous lap times by a whopping SEVEN seconds. Just to prove that too much is never enough, the T1 is now available in a 620 bhp Race Extreme version, aimed specifically at the high end track day market. It can generate 4 G under brakes and 3.5 G during cornering - the sort of G-forces an aerobatic pilot experiences. It accelerates from 0-100 kmh in 2.8 seconds and 0-100mph in 5.8 seconds - faster than a base-jumper in free fall! With a power to weight ratio better than double that of a Bugatti Veyron, this is almost certainly the fastest accelerating production car on the planet!