Cars have been doing this for decades. I can recall back in the 70's, my '76 El Camino did this also (and subsequent vehicles). I was told then it was to aid the vehicle in warming up to an acceptable operating temperature more quickly.
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2006 330i: SG/Blk-Blk-Burl/6MT/ZSP/Heated seats/Sat prep
01-26-2006: Ordered Vehicle
02-01-2006: Production Start
02-06-2006: Production End
02-09-2006: Arrived at POExit
02-13-2006: Transit - Don Juan
03-01-2006: Unloaded in Charleston
03-02-2006: VPC
03-06-2006: Arrived at dealership
03-08-2006: Took delivery
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