Essex Rental Corp. Ticker Symbols to Change Effective May 28, 2009

BUFFALO GROVE, Ill.--(Business Wire)--
Essex Rental Corp. (OTCBB: HYDQ; HYDQW; HYDQU) ("Essex") today announced that
its common stock, common stock purchase warrants, and units will begin trading
under the new symbols ERNT, ERNTW, and ERNTU, respectively, beginning Thursday,
May 28, 2009. The previous ticker symbols for these securities were HYDQ, HYDQW,
and HYDQU. Essex will continue to trade on the Over the Counter Bulletin Board
(the "OTCBB") while it continues to pursue listing of its securities on The
NASDAQ Capital Market. The new ticker symbols were assigned to Essex`s
securities by the OTCBB as a result of Essex`s name change from "Hyde Park
Acquisition Corp." to "Essex Rental Corp."

About Essex Rental Corp.

Headquartered outside of Chicago, Essex, through its subsidiary, Essex Crane, is
one of North America's largest providers of lattice-boom crawler crane and
attachment rental services. With over 350 cranes and attachments in its fleet,
Essex supplies cranes for construction projects related topower generation,
petro-chemical, refineries, water treatment & purification, bridges, highways,
hospitals, shipbuilding, offshore oil fabrication and industrial plants, and
commercial construction.

This press release contains statements which constitute forward-looking
statements within the meaning of Section 27A of the Securities Act of 1933, as
amended, and Section 21E of the Securities Exchange Act of 1934, as amended.
Those statements include statements regarding the intent and belief or current
expectations of Essex and its management team. These statements may be
identified by the use of words like "anticipate", "believe", "estimate",
"expect", "intend", "may", "plan", "will", "should", "seek" and similar
expressions. Investors are cautioned that any such forward-looking statements
are not guarantees of future performance and involve risks and uncertainties,
and that actual results may differ materially from those projected in the
forward-looking statements. Important factors that could cause actual results to
differ materially from Essex`s expectations include, without limitation, the
continued ability of Essex to successfully execute its business plan, demand for
the products and services Essex provides, general economic conditions,
geopolitical events and regulatory changes, as well has other relevant risks
detailed in filings with the Securities and Exchange Commission. Essex
undertakes no obligation to publicly update any forward-looking statements for
any reason, even if new information becomes available or other events occur in
the future.

Essex Rental Corp.
Martin Kroll, 847-215-6502
Chief Financial Officer
mkroll@essexcrane.com
or
INVESTOR RELATIONS:
The Equity Group Inc.
Melissa Dixon, 212-836-9613
Senior Account Executive
mdixon@equityny.com
or
Devin Sullivan, 212-836-9608
Senior Vice President
dsullivan@equityny.com

Copyright Business Wire 2009