A CRZ Travel Advisory is in effect for large portions of Outland, starting from a couple of patches ago and lasting until the indefinite future. Being randomly ejected from your vehicle when you cross zone lines is highly likely. Falling to your death is also highly probable. Pilots operating dual passenger mounts in Outland zones are strongly encouraged to avoid flying anywhere near the Twisting Nether.
This travel advisory is in effect until Blizzard stops laughing at how we react when our mounts suddenly disappear and we slowly descend to our doom. Use all possible caution.