Was that a cloud apparently stuck on the ground at the end of your video? I've never seen anything like that.
I suspect you are correct. It is the first time I have ever seen thar. I first though to myself "wow they have put in ground fog!". It looked kind of cool.
(System_Specs)
Case: Cooler Master Storm Trooper PSU: Ultra X3,1000-Watt MB: Asus Maximus VI Extreme Mem: Corsair Vengeance (2x 8GB), PC3-12800, DDR3-1600MHz, Unbuffered CPU: Intel i7-4770K, OC to 4.427Ghz CPU Cooler: Cooler Master Seidon 240M Liquid CPU Cooler Vid Card: ASUS GTX 980Ti STRIX 6GB OS and Games on separate: Samsung 840 Series 250GB SSD Monitor: Primary ASUS PG27AQ 4k; Secondary Samsung SyncMaster BX2450L Periphs: MS Sidewinder FFB2 Pro, TrackIR 4