I vote for Tokamak because it does cars better than ODE.
Vorderman's the only one who's managed that I think. :P I love SRX :)
I managed to give the cars in the "Clubman GT" the ability to drift but i did that through blitz hacks rather than ODE- this also took me almost 3 years to perfect since i never ever got it right.
I'd love to know how you acheived it in Toka since the only think i found toka useful for was rubble in a recent MP tech demo of mine.
I was rather surprised when i saw your SRX game used toka, since i never knew Toka could do it :)
Also, trying to get an ODE car up to the speeds I've managed with tokamak just causes loads of problems - you may notice that most of the ODE car demos only let you go fairly slowly.
Ode's joints get shot after a certain speed. To fix it you have to call the physics update 3 times per loop, which is why Clubman GT requires so much CPU time. If this werent the case, Clubman GT would probrably run on a 400mhz system.
If there's an easier way to fix ODE tyres, i'd love to see that too!