Langer said he had a valid driver 's license . Charter bus overturned on Iowa freeway , killing three miles women . Driver hospitalized in serious condition ; officials looking into possibility of `` medical episode '' only one people were aboard bus en route to Minnesota casino ; 22 unhurt .
Charter bus overturned on Iowa freeway , killing three miles women . Driver hospitalized in serious condition ; officials looking into possibility of `` medical episode '' only one people were aboard bus en route to Minnesota casino ; 22 unhurt .