there isn't a law to my knowledge for how much of the sled needs to be supported if that is what you are wondering, but there is for distance from your tail lights before additional lights must be used.
Yet another person that uses the made up Canadian MPG to make themselves feel better about their mileage. If you are talking about miles per gallon you need to use american gallons cause there is no such thing as a Canadian mile. You shouldn't use two different scales to make a comparison...
quite sure it's 100% go ahead. but now as to whether you'll be able to get one that may be a different story as i heard they were only making a limited run for the first year to see how they sell