If you are on a car trip in a northern state, know that you should NOT warm your car. For, the process of warming cars increases gas waste, which increases oil dependency and pollution.

Learn to drive before 1990? You have some un-learning to do

It is now a myth that a warm and running vehicle is better to drive than one from a cold start. If you started driving in the 1980's and before, you were trained to warm your car in the winter, as your car's carburetor could easily stall if you didn't. However, all cars since the early 1990's now have fuel injection - so there is no need to worry about stalling.

In fact - you could get a ticket

And - another reason to NOT warm up your car: many jurisdictions have laws against idling cars. For example, the Minneapolis Anti-Idling Vehicle Ordinance states that you can not idle your car for more than 3 minutes in a one hour period, and if you do - you could be fined $200 - yikes!

Read the full articles here:
The biggest winter energy myth: That you need to idle your car before driving

Minneapolis Anti-Idling Vehicle Ordinance