Can't remember where I posted it (probably in the Sudbury thread?), but I made the Ottawa to Sudbury leg in my S100D during a cold April day with temps around freezing. That is the uphill leg so it would have been easier in the other direction. So I'm not saying it's easy but it's possible with S100D or LR3. Would not attempt after dark or in sub-freezing temps though.Awaiting this one with anticipation! This is really the last missing link for me to be able to commit to a Tesla. Travelling from Ottawa to Sudbury right now is nearly impossible without the HWY 17 supercharger network.