Buick owners in the U.S. with an in-vehicle OnStar 4G LTE WiFi h Published on March 20, 2017 in Buick Owners Can Stream March Madness Anytime on the GoFull resolution (3600 × 2699) Buick owners in the U.S. with an in-vehicle OnStar 4G LTE WiFi hotspot don’t have to worry about missing a moment of the action during March Madness with the unlimited prepaid data plan. © General Motors