Actually getting a MTB’r to the top of the hill so he can bomb down is one of the most common uses for an electric MTB , so this is that unusual. Des[ite what many have said just about every mountain has trails that are inaccessible to cars. Especially in winter.
That said, there are some serious flaws here…
1- How would you get the bike back down the mountain of you ski down the mountain?
2- The motor is just big enough (500 watts and only 36volts) to get a average male up a paved hill on it’s own with confidence. I really don’t see how it’s going to get someone and their gear up a freaking snowy mountain.