February 28, 2008 Mr. L. Scott Wilshire

February 28, 2008

Xx. X. Xxxxx Xxxxxxxx

000 Xxxx Xxxxxxxx Xxxxx

Pittsburgh, PA 15228

Dear Xxxxx:

As you know, your employment agreement with HydroGen, L.L.C. (the “Company”), dated January 27, 2005 and effective March 1, 2005, is due to terminate on March 1, 2008.

It is the Company’s current intention to continue your employment with the Company and to enter into a new letter agreement with you. To that end, the Company would like to continue your current employment agreement in full force and effect (the “Extension”) until the earlier of (1) May 1, 2008 and (2) the date on which you and the company enter into a new letter agreement. Please understand that neither this letter nor the Extension is a guarantee of continued employment with the Company.

If you agree to the terms of the Extension, please sign below and return the signed letter to me.

Sincerely,

/s/ Xxxx X. Xxxxx

Xxxx X. Xxxxx

Chief Executive Officer

Agreed and accepted:

/s/ Xxxxx Xxxxxxxx
____________________	Date: February 28, 2008
X. Xxxxx Xxxxxxxx