Traffic was so bad out to Denver airport today that my taxi driver never got to use interstate I-70 the way he normally does. There were several construction activities and lane closures to deal with. We ended up driving all the way along 56th Ave that runs parallel to I-70. My appeal to airport planners : please please please do not build an airport 30 miles out of the city, and not provide mass transit to and from it – a train or a shuttle bus (with a bus lane). A freeway filled with 10,000 cars does not work anymore.