It's quite strange isn't it. After being parked for 12 hours, 30 seconds down the road (no exageration) it's already halfway to operating temperature. I too am really curious what it will be like in winter after a -20C start (can't remember off hand conversion to Fahreinheit, but suffice it to say ***** cold!).

Two climate control systems, one inside and the other at the tailpipe.

2007 Camry Hybrid (in service June 2006)
FE: 6.67L/100km or 35.3 mpg (6.11L/100km or 38.5 mpg in summer)