Speeding is likely part of a bigger problem that the person is oblivious to...and I cover a lot of ideas in some posts on my blog. Basically let's put together our best tips for getting from Point A to Point B in timely, manageable ways.
Some people never plan a cushion of time (I say half hour per child to get ready for instance...or at least ten minutes if it's a local routine run. Factor in extra time if it's dark, windy, rainy, snowy, really sunny and driving into the sun etc.