
It doesn't include all the stops - you need to fight with google maps to get what you want sometimes - but you get the basic idea of the route we took over the 42 road trip.
The times - good, bad and ugly - of LaurAndy's Cross-Country Road Trip 2010.

Well, we are back in the eastern time zone...but not before we spent a little more time in Chicago at the Field Museum. We overslept quite a bit today...I accidentally hit the "off" button instead of the "snooze"...oops. So, we missed free breakfast...we walked over to Cosi and then packed up the car. We decided with the price of parking at the garage, it would be cheaper to just drive over and pay to park at the museum...parking is quite the racket. Anyway, the Field Museum is the natural history museum in Chicago and it's gigantic. With our GoPass we also received admission to a special exhibit, The Underground. We arrived around 11:00 and set off. This museum seems to be known for Sue, their T-Rex, which is the largest, most complete and best preserved ever found. She is hanging out right in the lobby to greet you.
We took some photos of Soldier Field, where the Chicago Bears play, as well as a few of U.S. Cellular Field, where the White Sox play. 
Today was our second day in Chicago...we woke up a bit later than we had planned, but we made the most of it. After breakfast, we purchased tickets to the Chicago Trolley tour, where you take a double-decker trolley to 16 different stops around the city and you can get on and off wherever you want. We chose a few stops to visit and for the rest of the tour, we listened to the guide speak about each area we drove through. It's a great way to get a feel for a city in a short amount of time. Our first stop was Millenium Park. It has some great sculptures (including the silver bean, which has a more official name, but the silver bean makes more sense), a beautiful flower garden and some funny face fountains, among other things.
We got back on the trolley and drove through the next few areas. Our next stop was the Adler Planetarium. We decided to purchase the Chicago GoPass, which gets you access to four different museums and either the Hancock Building or the Willis Tower, which both have viewing decks, and it's good for nine days. With our GoPass, we got admission to the planetarium, as well as tickets for two shows...so, we chose the Night Sky Live, which is a more traditional planetarium dome show that detailed what tonight's actual night sky would look like in Chicago, as well as the Cosmic Collisions show, narrated by Robert Redford. Both were really interesting and just leave you feeling like space is even more incomprehensible than you originally thought :) There are also two floors of museum exhibits. One of the nice things about this stop was that it was right on Lake Michigan and the view is gorgeous...there must be food coloring in that water, it is such a perfect shade of blue.
So, yesterday was our day to actually "visit" South Dakota. We left Rapid City (sadly without having tried out the indoor water park) and drove to Mount Rushmore. I think we were both a little unsure what to expect, as far as how big the sculpture would actually be (or I was, at least.) As we drove up through the Black Hills, it was snowy and lined with pine trees...and suddenly you get a glimpse of the mountain! We finally arrived and walked up to the Visitor Center. Besides the actual sculptures, there are some walking trails and a museum. Of course, the snow prevented us from getting on the trails, but we got some decent photos. We learned there would be a ranger talk at 10:00, so we hung around for that, which lasted about a half hour. We learned about the history of the area and the mountain, how it got its name, why they decided to carve and how they chose who would be on it. We also got to see some mountains goats. Afterward, we went down to the museum and saw a video about the history and one about the plants and wildlife in the park. Our pictures are kind of sad because they all have water running down their heads, but it's definitely worth a visit.
Not to get too much into it, but our Motel 6 in Sioux Falls was by far the worst hotel we've stayed in...we don't recommend it...enough said. We were actually in such a rush to get out this morning that we were up and at breakfast by 7:30 AM.