Perhaps, but in 2005, I leased a GMC Yukon XL which at the time was manufactured in Janesville, WI - just down the road from me, and when it was delivered, the service manager was adamant that I "not run it through an auto wash for a few weeks - siting the "fresh paint". It left the factory on a Tuesday, I and took delivery that Friday. Likewise, my wife's last vehicle was a 2007 BMW X5 which are made in SC I think. Same thing, when delivered I was told to just "hand wash it" the first couple of times. Perhaps it's all BS, but I followed the instructions nonetheless.