Day job over, Kate exits her office building and walks toward the subway. She angles her head and checks the reflection in a shop window. A dark-windowed SUV is cruising down the street. It is the same one as this morning.
She keeps walking, flips open her wrist-terminal and starts a timer. It counts up in thousandths of a second as she quickly enters a series of commands. There is a pause and then behind her she hears the airbags in the SUV suddenly deploy.
Kate smiles. 3.009 seconds. A new record.