Of the 106 F1s built in total, chassis #18 is one of only two to be fitted with the extra high performance downforce package. That gets you a load of aerodynamics tweaks, but most importantly, a 680 hp V12 from BMW. The standard F1s have to make do with just 550 hp, which is frankly embarrassing really, isn't it?
Check out this video of the car and Andrew Bagnall, the lucky bastard that owns it.
Incredible.