Auction for Shares in Google's IPO May End Google Inc.'s initial public offering took a major step forward as the company notified investors that Tuesday may be their last chance to submit, withdraw or change bids in the unusual \$3 billion electronic auction for stock in the Internet giant. &lt;FONT face="verdana,MS Sans Serif,arial,helvetica" size="-2"\ color="#666666"&gt;&lt;B&gt;-The Washington Post&lt;/B&gt;&lt;/FONT&gt;