I always wave to t25 but only about 1 in 5 ever wave back. I nearly always get ignored by splits and havent yet past a brazilian in my van. Beetles have always waved back. I gave up waving to t4's &5's they never waved back either.
We've had a few beetles wave at us so we must be lucky! Will be heading out tomorrow so hopefully will see some nice folk along the south coast
One thing living round our area, there is a big aircooled following; bugs, splits, bays, T25's - they all wave away
Wasent at all , was all happy driving along with my newly repaired sliding door ,nothing was going to bring me down