After taking the stage together at this year’s Grammy Awards, Justin Timberlake and Jay-Z may also be hitting the road for as many as 13 stadium tour dates this summer. The duo has collaborated several times recently, including at a recent concert in New Orleans, which was Timberlake’s first live performance in almost five years. Along with the standard tour buses, the pair will also need several 18-wheelers to carry the truckloads of cash the concerts will likely make—tickets for an upcoming stop on Beyoncé’s “Mrs. Carter Show" world tour sold out in less than a minute …