Yes it's no longer a make thing.  When my parents had a couple of new VWs, in the early 1970s (They had become a bit tired of British cars, particularly a Ford Escort, going rusty before your eyes), they were still relatively uncommon and you would get a wave (The same happened a few years later with the Volvo 245).
When I first had the Midget, it was an MG thing (I don't remember it when my father had the first MGB GT V8 in 1974, so must have been a post Abingdon closure thing) and now it's a "Classic" thing  

  (And lets not get bogged down on that old chestnut but suffice to say I don't get waves from 1997 Vectras......not yet anyway), which in practice means anything with a suffix letter or earlier (An MG RV8 being an exception).
Not been out in the car this week, so no sightings.
 
			
			
									
						
							Rules exist for the obedience of fools and the guidance of wise men.
MG Midget 1500, MGB GT V8, Morris Minor Traveller 1275, MG Midget 1275 & too many bicycles.