Even if you don't sell it, maybe you could find someone you trust who has a good driving record to take it off your hands while you are gone. Have them "lease" it from you. $50 a month. Have them insure it, handle oil changes and other maintenance. Create a lease term agreement so you get the car back when you return.

This could work out well for both parties. I would rather come back to my car with an extra 25k (2 years avg) on it than have to worry about all the troubles long term storage could cause.

I also wouldn't mind being on the other end. $50 a month is short money for such a nice car.

If it is family or someone you can trust, shouldn't be too much problem. Heck, hire a lawyer to draw up the terms in writing.

Just an opinion.

-Jason