I was all set to order a Model S but I needed to make sure it would make it down and up my driveway. My current car, which has no problems with the driveway, has a ground clearance of 7.1 inches, and I recall when looking into this last year that the Model S with air suspension had a ground clearance of 7.3 inches, so I thought this would be no problem. Wrong. The sales rep I have been working with brought over a 70D with air suspension, set it to very high, but could not get down the driveway without significant scraping to the center of the car. Looking at the current specs on the website, the Model S with air suspension has a ground clearance of 4.7-6.4 inches. Did the Model S lose .9 inches of ground clearance at some point? If so was this a result of a hardware change, possibly the titanium underbody shield, or a software change? If it's software, could it be reverted to gain the lost clearance? Did this loss apply to all Model Ss or just newer ones? I thought that if this applied to all Model Ss at some point someone who needed the extra clearance would complain, but I can't find anything about it. BTW, I've never stressed over .9 inches this much before.