Lesson learned: even a Tesla with air suspension set to "very high" may still be lower than other sedans. I was entering a driveway (pic attached) that wasn't particularly steep imo, with the air suspension set to "very high", and scraped what I think was the bottom of the battery. It was a sickening sound that seemed to eminent from the bottom middle of the car. If you look at the picture, it seems that the bottom of the car scraped on the part of the driveway with the row of decorative brick, which created a little "peak" with relation to the level of the gutter and the rest of the driveway. There were other cars already non-SUV parked in the driveway that didn't have a problem. I'm afraid of what I'd find under the car, but it seems to be driving normally. Sigh.