Adding specialties can be tricky, since they are 'special advantage or set of rules a unit has' used by the game engine. Picture the special rules for beserk or undead troops in Warhammer fantasy. Unless you have a scary in depth knowledge of the mechanics or you coded the game it might not be an actual 'specialty' but more a particularity.
In this case, being motorized is a wiki category but not a specialty. I'll leave it for now since it could potentially be exploited or be a factor for a specialty. --Urbanprophet 01:36, 2 September 2010 (UTC)