I have only taken a short look at the files last night and don't have access to them atm but I think that the jeep uses the same vehicle ID as tanks (ID 164). Shouldn't it get a separate ID so we can define a separate name ("Tank" doesn't really fit a jeep), separate sounds and - very important - an own armor type? Right now jeeps have the same armor as tanks which might explain why the jeep in the video took two hits to destroy.

Also for ammo I have seen that HEAT does less damage against a jeep than it does to tanks. That doesn't make sense to me. HEAT rounds are the preferred ammo against lighter armored vehicles like APCs.

Also is there a keyboard shortcut to create an enemy jeep in cheat mode? It would be good to have one for testing.