Do I or do I not warm up a car in cold weather?

There are a lot of opinions about whether one should warm up a car in cold weather before driving.
The answer is: "Yes", if you want the interior to get warm. It also gives the oil a chance to warm up so the transmission, bearings and such will have oil freely flowing.
The answer is "Yes" if you want the coolant to flow freely and not burst a hose if the thermastat opens and there is no where for the frozen coolant to go.
The answer is "No" if you understand most cars warm up quicker by actually driving them slowly for about 20 seconds.
The answer is "No" if you don't want to risk having your car stolen.

Cars years ago required warming up because of the carburetor. The newer fuel injected cars don't require it.

However, if it is under 25 degrees, a 10 second warm up rule is effective. If it under 10 degrees.....it's time to move!!!!!