My car is electric so its start and go (well minus starting the cabin heat and defrost via the remote app). TDI we will let idle for 15-20 seconds before we roll off, it doesn't idle high enough for the alternator to give enough juice to run the aux strip heaters and it won't warm up idling anyways so its just slow and steady after the short idle time. Coldest we really see in ATL is mid-high teens so nothing crazy like yall see up north.