Wow. When I first moved to San Antonio a few years ago I moved into the Avalon Apartments. Those are the apartments that now partially cover the old track (SE side of track, upper right of photo, turn 1 or 3?) The drainage ditch that runs just behind the track is still used there. Moving up the photo it looks like an early Corinne Dr. then Salado Creek next to Holbrook Rd. I knew I heard something in my dreams!