Finding a parking spot in a crowded city just got a whole lot easier!  San Francisco has embedded magnetic sensors under 8200 parking spaces throughout the city, to detect the presence of a car, and has made this information available to all at the SFpark website.  It doesn’t show individual spots, but gives a block by block status of congestion, with estimated number of spaces available in each, along with the parking rates for different times of day.  Pretty cool!  And yes, ‘there’s an app for that‘ too…