Top Gear covered the Ariel Atom 2, an ultra stripped down track car for the road (or a souped up go-kart, whichever way you want to look at it). It’s all praises, and you’d be suprised at the track test results at the end.
Short re-cap on what the Ariel Atom 2 is:
The Ariel Atom. This my friends, is not what Id consider a car. More like a Go-Kart. But its powered by a supercharged Honda K20 engine making 300 horsepower on a 456kg body. Madness? Yes. It is fast? YES!
This very light track car (or heavy go-kart) is powered by a Honda i-VTEC 2.0 engine making 220bhp at 8200rpm and 196Nm of torque at 6100rpm. It redlines at 8600rpm.
What makes it fast? Power to weight ratio of course. Lets compare. 300bhp for 456kg is roughly 600bhp per 1000kg? A Porsche 911 Carrera has 320bhp and weighs roughly 1350kg. Roughly 237bhp per 1000kg. You do the maths!
Video: Top Gear Ariel Atom