um, ok, I'm confused... you see, why don't you just :
A)walk?
B)get a bicycle?
why do you have to do both? I can imagine it helping you in anyway???
edit:
I figured it out, it's not a proper product, you can't buy the "treadmill bike". I think that it's a engineering project or something to do with University... What gave it away was the laughter at the end when the one guy said "I can take it up stairs". If you look at the age of all the "actors" for the "ad", you can see they're in their 20's... you will also notice that the same bike is used through the whole "commercial". It's clearly an Engineering project for some university where they just said create something and make an advert.