Hold on now. Your efficiency without preheating was 2.21 and matches more closely what others have reported? So why didn’t the heat pump still bring your efficiency significantly higher than those without it? My efficiency with no heat pump and no preheating in the kinds of trips you mentioned, even in 25 degree temps, is generally higher than 2.21 with no heat pump. I can tell you my new i5 with heat pump takes a greater % hit in cold weather than my ‘heat pump-less’ Lucid. Obviously other factors could be at play, but this is my direct experience.
As I’ve said, this is why I’d like to see a controlled A/B (same roads, same ambient temperatures, same driving techniques) with 2 similar Lucids with & without a heat pump. It’s the only way we take this out of the subjective realm and into the objective arena. I just seem to recall that other cars where a heat pump was later introduced, did not result in much of an efficiency gain.
Not trying to be contrarian, I’d just like to see the science.