(Various)  --  It was another deadly weekend on Minnesota highways with at least six people killed.  In Meeker County, 50-year-old James Nelson and 43-year-old Amy Langford of Spicer died Saturday when their motorcycle was rear-ended by a possible drunken driver.  A 56-year-old woman was killed Saturday when her car collided with a dump truck in Anoka County.  Her name has not been released.  Twenty-one-year-old Caleb Abrahamson of St. Cloud died early Saturday morning when the small truck he was riding in hit a tree.  The driver could face charges.  Meanwhile, two older women died in crashes in Dodge and Wright counties late last week.