I posted this vid in that thread with the stupid rotary whatisis, propel thingamabob! But the more I thought about it, I decided it was deserving of a separate thread to see if anybody else sees any potential for this.
It does look kinda cool. And I could definitely see an advantage to something like this for ppl living in the flats! Dunno if it would be very practical on the hill or BC tho. Anyway, here it is again!