Does anyone know if there are any bus tours that depart from Dallas and go to Austin, Houston or San Antonio, etc? I am going to be in Dallas and have a number of days that I would like to go see other parts of Texas while I am down there. Please give me any suggestions you can. I leave on the 19th of August, but I am available for tours from August 24 through August 31. Please advise. Thank you. Trisha K.