doom3 sdk just got released this weekend… time to brush up on your knowledge of c++ and classes… unlike the Q3 engine which was written in C and uses structs… doom3 source is all classes 
brush up on your c++ classes
Demolama
(Demolama)
#1
Salteh
(Salteh)
#2
Oi !
Go brush up your own c++ and classes, mine are all tideh, clean, nice and cute!

The D3SDK DL link seems to have been “error 421: too many users” for about 1 day… only managed to DL D3SDK this morning 
Demolama
(Demolama)
#3
doom 3 sdk 2 is released
included is a mod sample for vehicles
http://www.iddevnet.com/doom3/downloads.php
go download and check them out