Factual error: As Mike is entering the parking lot, Ford and an Audi models are visible which did not come out until after 2010.
Sunk Costs - S3-E3
Factual error: When Gus meets Mike there is a 94-00 black suburban in the background with rims from an 08-11 suburban which didn't exist at the time the episode takes place.
Continuity mistake: The sun changes considerably when Mike is scoping out the garage. At the beginning of the scene it is late afternoon. When the larger truck pulls in it is closer to noon.
Answer: The bulldozer could be disassembled, the individual pieces carried down, and then reassembled once underground.
BaconIsMyBFF