So when I filmed this, I was wondering the same thing that the engineer just sped up a little bit, but I don’t really know, I mean it’s street running on a sidewalk next to a hotel so I’m not sure what the speed limit is cuz I spent some time looking around the tracks for a sign, but I’m assuming 10-15mph, especially in the second clip, that curve seemed tight but I guess it was fine for the train to speed up a bit.