Both driving the car, and letting it sit at 100% (especially while hot) will produce degradation. Which tactic is better probably depends on the weather.
As I understand it, Hx is a momentary 'snapshot' of the pack's internal resistance when the reading is taken, while SOH is more like an average of it over X period of time. Hx can move around more, and more often, than SOH.
Someone please correct me if I have the above wrong.
2013 "Brilliant Silver" SV with Premium Package and no QC, and 2009 Vectrix VX-1 with 18 Leaf cells.
The most offensive, tasteless phrase in use here is "Pulled the trigger." I no longer respond to posts that use it.