The OnStar FMV (For My Vehicle) add-on has been fairly popular, and OnStar is looking to begin making the device more accessible to an even larger audience. From May 6 though June 16, OnStar FMV will be available for $99.99, with installation included, which is about $200 off the standard price of the device. Definitely a nice Mother's Day, Father's Day, or graduation gift, bringing OnStar features like automatic crash response, turn-by-turn navigation, and hands-free calling to non-GM vehicles.