agree 100%. For me, improving efficiency is a game. It does help a little when I take a long road trip every so often...but it is really just a game. I no longer race or even autocross, so other "performance" upgrades are no longer that interesting.
Maybe I'm just getting old, but I do get a kick out of seeing the wh/mi numbers go down, while still driving "normal" (which often means in a hurry for me). I've played with air pressure, installed the UPF front lip and rear spoiler, tried different aero wheel covers, and of course now the Hankook ION's. Maybe one day I'll bite the bullet and lower the car in the name of improved efficiency. Given I have enough solar/battery for 100% offset, none of these efficiency improvements will ever save me a dime. But they are fun and might save me a few minutes on a long road trip.