(appeal of grant of summary judgment to defendants on plaintiff’s claim of adverse possession; court affirmed on basis that plaintiff failed to establish exclusive possession of disputed property; plaintiff claimed he and his predecessors-in-interest had exclusive use of property from 1964; county held title to property beginning in 1958 and granted a perpetual easement to defendants in 1998; under previous statute plaintiff required to have exclusive possession for a minimum of 40 years to acquire land from county; in 1980 statute was changed to require only 20 years of possession, but plaintiff did not have exclusive possession until 2000; appellate court agreed defendants’ use was more than casual and defeated plaintiff’s claim because he was unable to meet the 20 year requirement).