The airport stop in Madison is not a bad idea because this line is meant to be a regional service and not just for southern WI. Bringing the train into Madison will slow it down too much due to the density and heavy cross traffic caused by the isthmus. Also keep in mind that Madison and Dane County have been studying (with growing support) the possibility of building a local light rail system. If high speed rail comes to the airport, a local system (if built) would link up with it and get riders to other parts of the city more efficiently than buses or cabs. This would hold true in Chicago and the Twin Cities since they already have local rail systems. It could be a boost to Milwaukee's attempt to get support for a local rail system as well. As a system like this gets built, ridership will not be robust immediately due to its limited destinations. But as it's expanded, more and more people will use it as an alternative to automobile and plane travel. Oil prices will continue to go up and therefore, create more of a demand for rail travel like this. Another thing to keep in mind is that train travel is not affected as much by weather and traffic, so it a more reliable form of transportation. There are also a growing number of people in this country that are living without cars due to the high cost of owning one. Linking up major populations with one another via high speed rail is a great way to increase those numbers. Edit: One more thing. Yes it's expensive to maintain our roads and it will be costly to maintain additional rail lines (although not nearly as much as it is to maintain roads). But one thing the opponents are forgetting is the cost to continually expand our highways to make them wider. By taking some of the cars off the road with rail travel, we prevent this need in some areas, and at least delay it in others which saves a ton of money and land.