There are a lot of problems getting the Angry Mob into a vehicle, but it can be done, despite LOTS of bugs. You can set the transport u want to carry them to carry the number of people in an angry mob +1 (for the nexus).
Errors include when the nexus doesn't board the transport, when only the nexus is evacced out of the transport, etc. The list goes on. I'd avoid trying to do it to be honest
