Ever is a big word I know, but it looks like it could be a long time that any back will have an opportunity to break Emmitt's record with so many teams going to 2 running back system/backfield by committee...
probably not...... i was looking at stats the other night on profootball-reference....... even these great great backs only have 5-7 huge years. look at LT, even he only had 7 monster years.