I didn't have to deal with purchasing an out of state vehicle, but I did just recently transfer my Arizona titles to Ohio. All they did was an inspection which, like previously stated, only consisted of a VIN check to make sure things matched. I would recommend getting a temp tag for the car from Indiana if you're able to. I don't know what the law is here but in AZ, you CANNOT put a plate (even if it's your own from another vehicle) on a vehicle that it's not officially registered to. In Arizona that's a felony for which you'll be arrested, and your vehicle impounded. No joke!! I don't know if you're allowed to do that here but I would talk to Ohio and Indiana Department of Public Safety to check and see if you're able to do that before trying it.