A similar thing happened in San Francisco last year: http://www.flickr.com/photos/damianspain/2584019149/
And the cop in pursuit on streetview: http://maps.google.com/maps?f=q&hl=en&geocode=&q=presidio,+ca,+ca&sll=34.795206,-118.85249&sspn=0,359.990387&ie=UTF8&ll=37.799535,-122.459579&spn=0.00412,0.009613&t=h&z=17&layer=c&cbll=37.799607,-122.45953&panoid=jNBw15060GsqcNU0_hojPg&cbp=12,217.9804555843358,,0,5
http://www.flickr.com/photos/damianspain/2584019149/
And the cop in pursuit on streetview:
http://maps.google.com/maps?f=q&hl=en&geocode=&q=presidio,+ca,+ca&sll=34.795206,-118.85249&sspn=0,359.990387&ie=UTF8&ll=37.799535,-122.459579&spn=0.00412,0.009613&t=h&z=17&layer=c&cbll=37.799607,-122.45953&panoid=jNBw15060GsqcNU0_hojPg&cbp=12,217.9804555843358,,0,5