Ugggg, drivable vehicles. The only joy I'd get out of those is the fact that stupid CTs would spend so long filling up the APC that it wuold give me time to hide outside with a auto-shotty and HE Grenade. Wait for 'em to drive by, toss in the nade, and then do a run by after it goes off. My record to this day is still getting 6 kills in under 3 seconds doing that.
I miss Siege.