Army unveils new tank—five years early

DETROIT—Car enthusiasts milling around the floor at the Detroit auto show this week will get the first public glimpse of the Army’s new main battle tank, as the service prepares to roll out its M1A1 Abrams replacement five years ahead of its original timeline. Rather than wait to field the vehicles until every last sensor and radio is determined, the Army cut the tank’s development time way down by getting the physical vehicle built and allowing the bells and whistles to b