Shabbat is about communal mindfulness and living in the present moment, and it is also about recognizing G-d as the Creator of the world. Perhaps it is the awe that people feel when pondering this notion of G-d as Creator that stops them in their tracks and leads them into that mindful, present state.
In addition, on Shabbat we recognize that G-d is the ultimate source of creativity. By resting on the Sabbath, we acknowledge that it is the divine spark within us that drives our creativity and our productivity.
Mindful Nuggets 