Minnesota experts are already calling for billions of dollars in infrastructure improvements to pave the way for autonomous vehicles to crowd city streets -- the latest state to stake a claim in the country's driverless future. So far legislatures in 29 other states enacted laws permitting automotive companies to test self-driving cars in public -- Nevada was the first to do so in 2o11 -- evidence that autonomous vehicles are going to be the latest bill of goods sold to the public by car makers. Minnesota is the latest state to get in on the action: Last month, the Department of Transportation released an 88-page strategic plan with 65 specific recommendations about how the Gopher State should update its laws, enable vehicle testing in cold-weather environments, and accommodate even more automobiles through extensive capital investments on and around their roadways in the next five years. "Minnesota has a vested interest in promoting this technology, but the majority of testing is happening in Arizona, California, and Nevada and they don't have the same climate we do," said Kristen White,the report's co-author and innovation director for the Minnesota DOT's Office of Connected and Automated Vehicles. The plan notes that fleets of driverless cars won't be fully deployed anytime soon.