Drove from Ottawa to Prescott, Ontario and back yesterday. Was glad that there was an L3 station at the Ultramar on Edward Street and 401, and also a few in Ottawa on the return home, because even with a full charge, I made it to my destinations with barely 20% capacity both ways. It was -15 degrees Celsius plus wind-chill though.
I was initially concerned about the capacity of my newish Leaf, in the Winter. But then I found this story (from January 2018, about a year old), that alleviated my concerns somewhat...
So we can expect about 50% loss in battery capacity when it's very cold out, on highway driving. (was driving about 105 kph yesterday to ensure that I wasn't holding up traffic)