It's the external undesirables that are hard to control. Your speed, how you accelerate/decelerate, and even how you react to other drivers are controllable. This is why in the introduction to the HyperCruzer thread that Gold will require some luck. If you get stuck behind a multi-car pile up (or the first snowstorm in Denver) you end up sitting for hours.Not impossible, you just have to control all undesirable behaviors for THAT ENTIRE TANK OF GAS.
I want the car cold after I do this as I'm usually over heated. The only time I'll let my car idle is while I'm scraping windows, and even this is iffy with the Cruze because of how long it takes to warm up at idle.Only downfall is letting the car idle to melt the snow while you plow/shovel a path out.
I use a windshield cover to avoid scraping/scratching my window. I start it and drive it easy after about 10 seconds... Mobil1 5W-30 warmed by the oil pan heater flows quick.The only time I'll let my car idle is while I'm scraping windows, and even this is iffy with the Cruze because of how long it takes to warm up at idle.
The diesels have heat assist. The rest of us just shiver.Hmm... I pretty much never idle. Like mentioned there really isn't much point. I didn't know these things had heat assist that rocks though.
You see clearly, grasshoppa! Hypermiling an Eco MT in the winter months does little to generate extra heat for occupant comfort. When it gets really cold out my car doesn't get up to temperature by the time I'm at work, but that's based on my colder-than-most climate. I wear long-johns in the winter...I can see this car taking ages to warm up though.