Bloomberg's Fleet and Congestion

How will the fleet of cars used by the employees of the Bloomberg administration be brought into line with the mayor's plan to reduce traffic congestion in midtown ?

Bloomberg's spokesman Stu Loeser emailed me this explanation:

The Mayor committed to reducing the civilian non-emergency fleet by 10
percent in his first term, and he did. That said, a few agencies like
ACS and Building have bumped up in fleet size because we've moved people out of paper-pushing desk jobs and into the field.

And as PlaNYC detailed (on p 122), we've added 1,700 hybrids to the
City's vehicle fleet in the past five years. 

In case you were wondering.