Carring long gun in vehicle

I will be visiting Indiana later this year. I would like to take a shotgun or ar with me like I do most places. Is there a special way it must be stored carried etc? Will be primarly in Indianapolis area.

Justintimesc,
Your best information would come from going right to Indiana's Web page and search gun laws in respect to possesion and transporting you can click on permit maps at usacarry home page and click on Indiana i'm sure it will have all the info you seek happy traveling