what to do in overland park,ks!?

im planning a trip to visit the national academy of railroad sciences in overland park,kansas on the campus of johnson county community college, and will just be there for a day or two, and was wondering, since it is going to be me(like’s railroad), my dad(likes cars), and my sister(likes girly stuff) and was just wondering if someone can give me information on what there is to do in overland park for people like us, or just stuff to do?
thanks

Go to Oak Park mall, you can never go wrong with the mall.