With what is happening with the DCQC stations, people like us who only need them when driving away from the local area on rare occasions, it is cost prohibited for us to use the Leaf, and much cheaper to use the ICE per mile than to use the DCQC's.
The way I see it, a network of L3 stations will only work if the Utilities provide the electricity at the EV rate. As it is the provider (eVgo, AC, Blink, CP, etc.) pays a high rate, then mark it up to give them enough to pay the Demand Charge and cover expenses.
Last night I stopped at a dealer 30 miles from home to top off before our return home. Last week their DCQC swithched over to eVgo. As it happened someone arrived just before us to use it, so we plugged into the L2 for 20 minutes or so. It gave us enough to get home. The guy at the L3 was just finishing as we drove away. We would not have used it anyway, why pay $10 for $1 of electricity at home. Gas is cheaper than that.
As to the battery cooling, maybe there is a way to put one of those water mist things in the air intake for the battery cooling. It could cool the outside air 10 or 20*f. Or find a way to have the water spray go directly over the battery pack. The evaporation of this water would cool them down.
2013 SL Metalic Slate - We LOVE our Leaf
MFG 08/13 Dlv 09/06/13 @ 10 mi
# 77 100 mile club
# 10 200 km club
2017 Tesla S 75D Pearl White
Delivered 5/16/17 @ 900 mi
Tesla Model 3 on order awaiting 200+ mile range Nissan Leaf