(appeal of granting of summary judgment finding defendant’s automobile accident was not proximate cause of second accident in which decedent was killed; on review, court found important that second accident occurred 2.5 hours after defendant’s accident and three miles away; decedent was determined to be “at-fault” for second accident due to following too closely; many other drivers were able to come to a complete stop without incident prior to decedent’s accident; decedent driver was intervening force and cause of his accident; trial court opinion affirmed).