Ownership Submission
FORM 3
 UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940
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(Print or Type Responses)
1. Name and Address of Reporting Person *
  CASE STEPHEN M
 2. Date of Event Requiring Statement (Month/Day/Year)
04/08/2011		 3. Issuer Name and Ticker or Trading Symbol
ZIPCAR INC [ZIP]
(Last)
(First)
(Middle)
C/O REVOLUTION LIVING LLC, 1717 RHODE ISLAND AVE., N.W. SUITE 1000		 4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
__X__ Director __X__ 10% Owner
_____ Officer (give title below) _____ Other (specify below)
5. If Amendment, Date Original Filed(Month/Day/Year)
(Street)

WASHINGTON, DC 20036		 6. Individual or Joint/Group Filing(Check Applicable Line)
___ Form filed by One Reporting Person
_X_ Form filed by More than One Reporting Person
(City)
(State)
(Zip)
Table I - Non-Derivative Securities Beneficially Owned
1.Title of Security
(Instr. 4)		 2. Amount of Securities Beneficially Owned
(Instr. 4)		 3. Ownership Form: Direct (D) or Indirect (I)
(Instr. 5)		 4. Nature of Indirect Beneficial Ownership
(Instr. 5)

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly. SEC 1473 (7-02)
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Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security
(Instr. 4)		 2. Date Exercisable and Expiration Date
(Month/Day/Year)		 3. Title and Amount of Securities Underlying Derivative Security
(Instr. 4)		 4. Conversion or Exercise Price of Derivative Security 5. Ownership Form of Derivative Security: Direct (D) or Indirect (I)
(Instr. 5)		 6. Nature of Indirect Beneficial Ownership
(Instr. 5)
Date Exercisable Expiration Date Title Amount or Number of Shares
Series F Convertible Preferred Stock   (1)   (2) Common Stock 6,852,175 $ (1) I See Footnote (3)

Reporting Owners

Reporting Owner Name / Address Relationships
Director 10% Owner Officer Other
CASE STEPHEN M
C/O REVOLUTION LIVING LLC
1717 RHODE ISLAND AVE., N.W. SUITE 1000
WASHINGTON, DC 20036		   X   X    
Revolution Living LLC
1717 RHODE ISLAND AVE., N.W. SUITE 1000
WASHINGTON, DC 20036		   X   X    

Signatures

/s/ Ronald A. Klain, Attorney-in-Fact 04/08/2011
**Signature of Reporting Person Date

Explanation of Responses:

* If the form is filed by more than one reporting person, see Instruction 5(b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1) Each share of Series F Convertible Preferred Stock will convert into 0.5 shares of common stock upon the closing of Zipcar, Inc.'s initial public offering of common stock. Reflects a 1-for-2 reverse stock split of the common stock of Zipcar, Inc., which became effective on March 29, 2011.
(2) Not Applicable.
(3) These are shares owned directly by Revolution Living LLC. Mr. Case is the Manager, Chairman and Chief Executive Officer of Revolution Living LLC. Mr. Case has the sole power to vote and dispose of the shares of the Issuer held by Revolution Living LLC.

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