The sensors are currently in what is known as BQE Central, or a half-mile portion of the expressway around Downtown Brooklyn.

The P/B ratio shows how a stock's market price compares to its book value. It helps gauge whether a stock is undervalued or overvalued relative to its net assets.

If you skid, don't panic. Keep your eyes on the road, drive in the direction you want the vehicle to drive, and never jam on the breaks.