Taking a water break at the 5,600-foot peak, we realized the Zero was only showing its heritage. This DS model is based heavily off Zero’s S-model streetfighter, which explains the stiff, cupped seat and the low handlebar that doesn’t work well when you’re standing on the pegs. It’s an eBike, but, not only that, it’s a streetbike underneath. With that in mind, all things considered, it bounded up the side of the mountain pretty gracefully. But the bigger question remained: Could we get home?