The ariel atom 300 does 0-100-0 in about 10 seconds!!
Check out this video. This is a Dax Rush equiped with a turbocharged hayabusa engine. About 380bhp in a car weighing less than 500kg.
http://www.daxrush.com/mov/zolder128.wmv
and
http://www.daxrush.com/mov/nurburgring.wmv