This is a perfect (and scary) example of why all Manhattan Avenues should have dedicated emergency vehicle lanes (that double as bicycle lanes). Who cares if the rest of the traffic is jammed? Let traffic volume economics figure itself out, but don't prevent helpless people from getting the help they need.
Ambulance Stuck in Traffic
If I had a dollar for every time I sped past an Ambulance suck in traffic going down 2nd Ave...I could actually buy a better bike.