(horse/car collision case; court upholds trial court's grant of summary judgment for horse owner; plaintiffs failed to show that defendant failed to exercise due care in keeping his horses enclosed; res ipsa loquitur inapplicable in livestock trespass cases in Kansas; livestock owner not required to make physical inspection of fence - visual inspection sufficient; livestock owner routinely checked fences, regularly repaired the fences; no evidence that livestock had been out in the past).