Random question that I have never really thought about. If I use my company's corporate rate for a rental car when booking a trip, but use my personal card for it, is that a business trip or a personal trip? I'm just wondering if the semantics matter. My personal card has the insurance coverage, but i'm pretty sure it says for personal and not business trips. The company allows us to use the corporate rate. I'm just wondering what happens if there is an accident during a personal trip. Any idea here? I would think I could easily show it being a personal trip if the rental company balked.