See the following Indiana law which addresses vehicle repossessions: IC 26-2-10.
Although IC 26-2-10 is the main Indiana law or statute addressing car repossessions, much of repossession law is governed by the terms of the contract. If you default, the car loan company can legally come and repossess your vehicle. Common examples of a default include: not paying title and other transfer fees, not carrying proper insurance, and making a late loan payment. If you are even one day late with a loan payment, the car loan company can consider this a default, and can legally start the vehicle repossession process.