Can someone explain why you can't take a Tesla for a test drive in Texas? If the "showroom" doesn't actually sell any cars, then shouldn't it be considered a non-retail facility (no different from the Tesla charging stations in Texas)?
You can still take a test drive in TX, I've done it. Just make an appointment. I'm not sure how they can do it legally. My guess is local contractors are hired to do it and not Tesla themselves.