Volcanic Vehicle Operation

I've had this idea for some time now and if I become an engineer this may be an invention I will pursue.

Here's the pitch: vehicles will become clogged with volcanic ash in the event of a volcanic eruption. Not only this but other vital systems related to cars will be vulnerable to volcanic ash. The gears and greased areas of a vehicle will most likely become covered and jammed from ash mud. I suggest a kit which transforms a car into a vehicle which can operate in volcanic conditions. The engine may not use air from the outside because the filters and intakes taking this in would become clogged. Instead the car will be equipped with large pressurized air tanks which feed the engine. I do not know how much air would be needed.

The need for this arises from the uncontrollable, certain, and unstoppable eruption of a super volcano, especially here in the USA. I recently moved to somewhere out west very near to yellow stone.. The fact that yellow stone is due to erupt is scary one for me. I don't have nightmares about it though. I have night mares about getting into college and taking classes with teachers I come to find out I don't like.

Comments and Crits anyone?