Road detection works fully

Fix was:
mDynamicsWorld->addCollisionObject(mTriggerNode,
btBroadphaseProxy::SensorTrigger
, btBroadphaseProxy::AllFilter & ~btBroadphaseProxy::SensorTrigger);
Instead of
mDynamicsWorld->addCollisionObject(mTriggerNode);

Erwin Coumans get your documentation together