Baha, here's your answer...
Quote
“The reason no one considered this seriously is that the Web layer on mobile devices was terrible,” he said. Google has taken advantage of the capabilities of the iPhone browser to create a product, internally called Grand Prix, that it says provides easy access to many of the company’s services, including search, Gmail, Reader and Picasa.
Google, which developed the first version of Grand Prix in six weeks, is introducing a new version on Monday, just six weeks after the first one. That is a speed of development not previously possible on mobile phones, he said.
While it doesn't specifically point out an SDK, one can safely assume they've had access to it.