I am a car enthusiast and have been a member of numerous car clubs over the years. When out driving cars like my Miatas, Z3s, Boxsters, etc, I would wave at other drivers of the same type of car and they would usually would wave back (as would I). I have had my Model X now for just over a month. Recently, I have been taking to waving at other Tesla drivers but I don't see them waving back. What do you guys do?