If you are buying a car, look into whether it is better to buy where you are or where you are going.
Consider sales tax, amenities you will find in a used car/on the lot. Things like A/C, heated seats, antilock brakes, smog certification, etc, can vary by area of the country (and how old the car is.) Also, some areas of the country are just less expensive for cars than others - Detroit area is less expensive than my city.
That said, it is probably best to do what is easiest, and that might be leasing.