Vehicle question - no more questions:)

Hello,

Can somebody tell me how can I get the current speed of my vehicle ( km/h ). I found a function in bullet ( getCurrentSpeedKmHour() ), but did not find anything in the ogre wrapper...
Also, is there any function for breaking? ( not setEngineForce ( -X ) or something like that )

Thanks,
Birmacher

update:
Found the functions, just searched elsewhere:)