That lot in Baltimore is a vehicle processing lot for the Port of Baltimore. Cars manufactured overaseas usually come by boat and delivered to places like that. The lot they're referencing is owned/managed by Wallenius Wilhelmsen which specializes in this RoRo style of logistics that are common with overseas car shipping. They'll sit there for a short period of time as all the customs work takes place and then shipped out all over the country after by rail or truck. Seeing a single snapshot in Google Maps of hundreds of new cars tells you nothing, you'd have to actually analyze how long those cars are staying there.
Seeing a lot with a lot of new cars with delivery wrap still on Google Maps isn't indicative of some new car graveyard, its just showcasing the ignorance of how car imports work. What, did they think a car manufacturing plant in Germany just suddenly teleports cars into dealer lots in the US? Did they think they were delivered by plane?