About a quarter of the rental cars in the United States are equipped with tracking technology, analysts estimate. Recent efforts have quietly focused on catching renters who ... break speed laws. "What if you're doing your due diligence on a transaction? It could threaten the whole deal." These stories should not be news to anyone here, but I didn't know the technology had been deployed so extensively. I can't imagine there are too many business customers who are pleased to see this. Some Rental Cars are Keeping Tabs on the Drivers | 
