We are two people travelling from Portland, Oregon to Boston, MA. We have 9 days in which to do this trip. One of us did Tuscon, AZ to Boston a year ago in 5 days, but it left VERY little time for sightseeing. We have the following spots in mind which we would like to visit - Yellowstone, Mt. Rushmore, Badlands, Chicago, Toronto, Niagara Falls. According to MapQuest, this will take 58 hours of driving. Does this seem ridiculous? Other than time, what changes would you suggest? How can we spend any time at any of these places? Any and all suggestions will be appreciated!