The saga surrounding a group of mysterious investors who have spent more than $800 million to buy up thousands of acres of farmland in rural Solano County has gripped Bay Area residents, local politicians and federal government agencies. Last week, the Chronicle reported that the investors were revealed to be a group of Silicon Valley notables who seem to be gearing up to build a new city. Here is what is known about the effort, according to Chronicle reporting … And a myriad of questions surround the project, including where its water will come from, how developers would address the area’s risk for flooding and extreme heat due to climate change, the impacts to the state’s agriculture distribution chain, and transportation concerns in an area currently serviced by a two-lane highway.