for this, you'll need HHT.
1)just to b sure, back up ur map
2) - in HHT open up the warthog tag under the "Vehi" (vehicles) group. you'll see mod2,antr, coll, phys, blah blah blah. look for the first 2 [effe] spaces. they shd b nulled out.
3) - swap them to effects\coop teleport.
4) - scroll up to effects\coop teleport,and open its own dependancies. you'll see the 1st 4 dependacies are [ligh]. null em all out. then move on t0 [part]. swap the 1st to vehicles\scorpion\cannon smoke trail,the second to vehicles\scorpion\cannon smoke. close it and test it out!
note: you can skip step 4 to get a kool "EMP" effect. experiment with the differnt effects!
okay, hope that helped. dont flame if this has already been posted; i already looked around and didnt find anything.

oh and by the way, press "q" ingame, or the flashlight button to activate!