im just kidding some now but I never met an electric engine that had a smoke unit but
am sure they have a steam generator that gives off steam hence the smoke effect!
I know we are all used to saying smoke unit. the video was okay am sure as time marches forward they will develop a style and feel more at ease.
viewing the video on an ipad the sound volume maxed out the voices were really weak am guessing either ipad issue or they did not use microphones attached to there shirt.