The first year I had Geico for my 53 3100 (about $500 for an everyday driver). They insuranced it no problem. You can get a quote online. After I restored it I sent pictures to Hagerty they emailed me back a value from the pictures($35,000). They call it "agreed valuation policy". I was figuring less so I said yes. The whole year cost $239. Hagerty does not have any limitation on mileage. I would suggest Geico if it is just a driver. BTW California doesn't use a credit score for vehicle insurance, I have no idea if Texas does. I think if you explain the company car to Hagerty they would have no problem either. They are a family owned company and everyone I have deal with there has been extremently nice, but I have not filed a claim with them so I wouldn't know how that would go. Good Luck Mabel's Mom.