The way they do transports in this game is really streamlined. You can add a transport to a unit by spending resources in the upgrade screen. They become part of that unit rather than a separate entity, you can click "mount/unmount" to get in it and it automatically mounts the unit in the transport if you try and move further in a turn than you can on foot. Transports have their own hp and weapons systems but disappear when you dismount. One could argue that's a bit dumbed down and doesn't allow you to use dedicated transports as separate in-game entities but I personally found transports in many games both turn based and RTS incredibly fiddly and this is an elegant solution to that problem while keeping transports in the game. My Steel Legion are rolling around in Chimeras now in the tutorial campaign.