Need a command to freeze

I am using the follower script and i have a voice activation hooked up to it , so when i say stop it should stop . Well when i say stop it sets the vechicle off physics and stoping the vehicle but instead it flips it up and makes it a dodgy angle , though it does stop it.

I need somthing that will just freeze it.

I'd say, try calling llSensorRemove() when it gets the "stop" command? I assume that it's the sensor that controls the movement... it senses your av, then moves to the detected vector?

If that doesn't work, try having the target set to llGetPos() when it hears "stop".