As a tip that goes with the radiator block, keep the cabin heat off until the engine is warmed up.
Remember that when the temp gauge first reachs normal (1/2) it's the coolant that has reached operational temperature, not the complete engine, or drive train, bearings, etc.

I have a similar distance commute as drquine and for my first 12 miles the cabin heat is off and the knob set to cold, and at 12-22 miles (~15 minutes) it is switched to full hot but the fan is still off which allows a passive air flow over the heater core.
At the 22-25 mile mark the drivetrain is fully heated (Worked loose) so the fan is set to what ever.

I realize this may not be practical in everybodys case, but it's only a tip where it is applicable.

That way the tiny amount of gas only has to work and heat the engine, not the engine & cabin.

Efficient drivers do it better.
1003 miles a tank personal record. 74MPG calculated. HCH1 CVT