Minneapolis is finally moving earth in preparation for light rail transit. But what about Saint Paul's transit future? Instead of laying rails, the capital city is rumbling toward a less expensive system known as a busway to connect the downtown with Bloomington. There are still plenty of questions about what such a busway might look like ... and its construction is not a sure thing. Minnesota Public Radio's William Wilcoxen visited the Twin Cities' only existing busway at the University of Minnesota and filed this report...