OnStar found itself at the center of a firestorm after it sent out an e-mail notifying customers that it planned to collect data from vehicles even after service had expired or been terminated. That is, unless the (soon to be former) users specifically opted out. Well, in a statement today, President Linda Marshall changed course and announced the post-subscription data collection would be opt-in only. The company still hoped some departing customers would volunteer to maintain a connection so that it can "provide forme