While M&A is making a comeback, deal-making can still be tough. Just look at General Motors. By all accounts, it looked like its proposed deal to sell Saturn to Penske Automotive Group (NYSE: PAG) was all but done.

Not so. Yesterday, Penske backed out. The reason: the company thought it would not be able to supply cars after 2011 (when GM would stop production). As a result, Saturn plans to shutdown operations.

This morning, The Wall Street Journal (subscription required) reported that General Motors (OTC: GMGMQ) has reached a preliminary deal to sell its Saturn distribution network to Penske Automotive Group. Penske is the second-ranked U.S. dealership group.

The Journal says that Penske will take over the brands, trademarks, service and parts operations, as well as the distribution operations related to the Saturn brand. The report also notes that Penske will make deals with other auto makers (one possibility is Renault SA) to purchase vehicles that will fill out the Saturn portfolio.

MOST NOTEWORTHY: Penske Automotive, CarMax, Towerstream, Solera and Northstar were today's noteworthy initiations:

• Kevin Dann initiated shares of Penske Automotive Group Inc (NYSE: PAG) with a Buy rating and $25 target. The firm believes shares deserve a higher multiple given the company's reduced exposure to slower growing domestic brands combined with the increased penetration o luxury as a percentage of industry sales.
  
• CarMax Inc (NYSE: KMX) was also initiated at Kevin Dann with a Buy rating and $28 target, as they expect the multiple expansion to continue as confidence builds in the company's sales and expense strategy.
  
• Think Equities started shares of Towerstream Corporation (NASDAQ: TWER) with a Buy rating and $5 target and said the company is rapidly growing given robust demand fro high bandwidth services, market expansion, sales force growth, and higher ARPU services.
  
• Barrington believes Solera Holdings Inc (NYSE: SLH) is positioned to capture growth through technology adoption in claims processing by insurance companies, starting shares off with an Outperform rating and $27 target.
  
• Jefferies resumed coverage of Northstar Neuroscience Inc (NASDAQ: NSTR) with a Buy rating and $21 target, as they expect the company's Phase III EVEREST trial to yield positive positives, setting the stage for an FDA approval by Q109.

OTHER INITIATIONS:

• Friedman Billings started shares of IPG Photonics Corporation (NASDAQ: IPGP) with an Outperform rating and $28 target and added shares to its Top Picks List.
  
• The firm also resumed coverage of Rofin-Sinar Technologies Inc (NASDAQ: RSTI) with an Outperform rating and $92 target.
  
• ABN Amro started China Netcom Group Corporation (NYSE: CN) with a Hold rating and China Mobile Limited (NYSE: CHL) and China Unicom Limited (NYSE: CHU) with Buy ratings.
  
• UBS started RSC Holdings Inc (NYSE: RRR) with a Neutral rating.