Audi and ATT have finally announced pricing for their new in-car 4G LTE plans. The first of its kind in the U.S., the plans will initially launch in Audis 2015 A3 sedan, which goes on sale this year, but will eventually be available in all of the German automakers vehicles. A 4GB data plan through ATT will cost you $30 per month, while a 6GB plan will cost you $40 per month, thats roughly $7.50 and $6.70 per gigabyte per month.