I really don't like the shorter scrolling text, it's moving too fast for my tired eyes. On the longer texts it was alright.
I don't mind the voice over man. Especially as it isn't just voiced over but a mix! I don't really like that you're talking over yourself though. It makes it a bit odd, so maybe mute that? I also think the voice over works really well with the picture(s). I also wonder what keeps you from adressing some of the stuff you voice over while you're riding instead. Like the track experience being more valuable for example. All in all this is definetly what I ment with mixing it a bit. This is totally acceptable in my book. Nice video.