. >> the breeze is blastwhat's worse than the snow. the breeze gets covered. >> it is pretty bad. trying to get the day done and getting the mail out. rfrmgts >> reporter: what is the worst part? >> the sipperiness and ice under the snow is the worst. >> reporter: they say they have to take frequent breaks while they out clearing the snow. i'm ted greenberg, nbc 10 news. >> dangerous cold can take a toll on your car. the big question is, when dwruyou get up in the morning and you hopefully heat it up to get off on the road, do you need to warm your car up? randy is live in new castle county to help us separate myth from reality here. >> reporter: it has become the routine. you wake up realize how cold it is. you hop in your car, start her up and it warms up for you. a lot of people think it helps your car run more smoothly. it turns out it is the smith from back in the days when cars needed to get it up and running. it is a myth. comesleaving it running in the cold could lead to theft. firestone says it could also strip oil from your pistons and waste gas. we caught up with a mech