The MRT 5 open wheeler was added to Live for Speed
http://www.racesimcentral.net/
no-one here has commented yet.
This is a small, open wheeler, with a 600cc motorbike engine and gearbox (1
down, 5 up). However, it is a proper car, with suspension, not a cart. The
default configuration is very twitchy, but that's as it is in real life.
This is a real car sim, developed in conjunction with the MRT racing team.
Enjoy,
Tim