It's irresponsible to drive too slowly.
Millie was driving down the highway on her way to work.
Millie wants to get to work safely.
Millie drives down the road following the laws and going the speed limit.
Millie drives as slow as she can to avoid getting into an accident.
Millie manages to get to her workplace on time and in a safe manner.
The drivers behind Millie get restless and one of them sideswipes her car.