Do you start your car and let it idle when it's freezing cold outside to allow the engine to "warm up"? While there is some valid reasoning around doing this, especially during frigid cold temps, you don't need to do it for more than 30 seconds. Modern cars have improved fuel-injected engines that work perfectly well without idling your car for several minutes before driving. Lessening your idle time will improve your fuel efficiency and also is better for our environment.
ANDREWS MCMEEL SYNDICATION