Audi and ATT have announced pricing details for LTE connectivity in the 2015 A3 sedan, which will be the first automobile in the US to offer in-vehicle 4G data when it launches this month. For drivers that need more, ATT is also offering a 30GB / 30-month data plan for an eye-popping $499. And starting this summer, Audi says youll be add a car to your existing ATT Mobile Share plan. Thankfully new Audi buyers wont need to choose between these options while theyre signing the paperwork; all A3 sedans equipped with the companys Audi connect system will receive a free six-month LTE trial period.