QUOTE (TheOOB @ Jun 13 2009, 07:44 PM)

Why not. the rapids changes in air pressure from sound in a very real thing, if since it ignores armor it can skip straight to those delicate electronics.
If the changes in air pressure were sufficient to damage a vehicle then it wouldn't be doing Stun damage to people. "Electronics" aren't actually that delicate. Yes - if you put a scratch across a circuit board then you'll damage it I imagine, but you can probably shake a microchip a lot harder and longer than you could a person without them getting damaged. There are effects where you can damage something by hitting it at a precise frequency causing it to vibrate itself to the point of damage, but that's got to be a specific targetted effect like the Shatter [object] spell, surely.
Also, a character is allowed defensive armour for things like ear plugs. There's no way we're talking about the same sort of sounds here. I'm not even sure what sort of sound you could generate that would damage a car and still be called "sound" and not an explosion.
Anyway, that's my reasoning. Indirect Combat spells can be great in the right circumstances. Which is one of the reasons I didn't like the nerfing of Direct Combat spells to make the two groups "closer in power."