Different strokes?

     I had something totally other lines in my sights - BUT - Yesterday p.m./evening I was out @ Chez Jerra.  At set off home there was ice on the Car = my first this year; My Oca had intimated as much but I'd never seen it.  
     This a.m. I saw plenty proof of Frost.  It's not so obvious where they're dry and unfrosted, but when thus adorned we can see every "Front Door" on the otherwise apparently random webs.
      It seems that one variety prefers the "Boxes" while a different one favours the Vehicles.