The Atlas recovery tank is designed for all your engineering needs. With a high-powered engine a lone Atlas can easily tow a wrecked Leman Russ or Chimera to the repair yard or bulldoze a path through battlefield debris. Required dozer blade not included.
This was another design made so I can have the proper full strength armoured regiment. Maybe when Adeptus Titanicus is released there will be rules (and a proper model) for this, but if it doesn't happen I won't mind.