If you are buying the car, the mileage is irrelavent. The car could be totaled and no one would care. I sold cars part time for a Chevy dealership for a while. Hated the job but made a few bucks.
If it is a Dodge, I believe they are running a promotion on Leased vehicles. You are aloud to trade in a vehicle a few months before the lease expires and suffer no penalty reguardless of the mileage. Pretty neat if you have a ton of miles and want to lease again....
J