My Opening Day Experience! In-N-Out Burger has officially made history! In this video, we take you to the incredible grand opening of In-N-Out Burger in Tennessee — the FIRST In-N-Out restaurant ever to open east of the Mississippi River. Even more unbelievable, In-N-Out opened THREE Tennessee locations in a single day, marking one of the biggest fast-food expansion moments in history. FIRST In-N-Out Burger East of the Mississippi River Opens in Tennessee | Grand Opening Day Experience My Social: #InNOut #InNOutBurger #Tennessee #GrandOpening #FastFoodNews #FirstEver #EastOfTheMississippi #foodie