The Unreal II multiplayer Q&A on GameSpot talks with Legend's Scott Dalton about the upcoming XMP (extended multiplayer) for Unreal II that will be part of the Xbox version, and released as a free add-on for the PC version. They discuss the new gameplay modes, strengths and weaknesses of the classes, and vehicles, like the following bit describing the possibility that their Unreal II vehicles will be accompanied by those from the upcoming UT 2004:

Unreal Tournament 2004 has a type of vehicle code called S-Vehicles that uses a single rigid physics body on a skeletal mesh. Our vehicles are made up of component pieces, each with its own physics, so they're different in that aspect. While Peter Carlson, our vehicle programmer, has had duties on another project to take care of, he's been setting up S-Vehicles as a side project. Both types of code offer a somewhat different feel, so we hope to allow both as a server-side option for release.