For more than a hundred years, General Motors and Ford Motor have measured themselves against each other on the showroom floor and the racetrack. Now the two Detroit giants are chasing the same prize in far less familiar terrain army procurement offices and power utility control rooms as the American car business they built together shows signs of running out of road.The numbers behind this pivot are stark enough to explain the urgency.

Both companies sank billions into battery-cell plants built for an electric-vehicle boom that never fully arrived. U.S. EV sales fell roughly 25 percent in the second quarter of this year compared with a year earlier, according to International Energy Agency data, and their share of new-car sales has slid from about 10 percent in 2025 to closer to 7 percent, a reversal that followed the expiration of the federal $7,500 tax credit last September. Ford alone wrote off $19.5 billion tied to its electric ambitions last year and still lost $8.2 billion in 2025 despite posting record revenue of $187 billion.

That combination idle battery capacity, a cooling EV market and a stubbornly profitable legacy business that can't grow forever has pushed both companies to look for somewhere else to point their factories.

Defense has become the more immediate answer. Ford joined GM this year in courting Pentagon contracts after the Trump administration approached domestic manufacturers about lending their mass-production know-how to the military supply chain, a courtship that reflects growing unease in Washington about how dependent American defense programs have become on a small circle of traditional contractors and, more pointedly, on components sourced from abroad.

Alfred Grein, who oversees research and technology integration at the Army's Ground Vehicle Systems Center, put it plainly: concern over foreign involvement in defense manufacturing has become "more and more crucial," and the tiered supplier networks automakers already run give the Pentagon a way to scale production quickly without building that capacity from scratch.

GM got there first. Its Infantry Squad Vehicle, built on the bones of the off-road Chevrolet Colorado ZR2, has already been fielded, and the company expects defense revenue to approach $700 million this year while targeting positive earnings on that business for the first time. CEO Mary Barra told investors in July that GM is working alongside Lockheed Martin and other established contractors to widen the country's defense industrial base, describing the unit as something that should become "a more meaningful and diversified contributor" to earnings over time.

Ford has been quieter domestically but louder abroad. Earlier this month it confirmed a partnership with General Dynamics Land Systems and British engineering firm Ricardo to pitch militarized versions of its Ranger pickup for the U.K.'s Light Mobility Vehicle program, a contract worth close to £2 billion that will replace Britain's aging Land Rover and Pinzgauer fleets. Ford's European chief, Jim Baumbick, framed the bid as more than a hardware sale, calling it a bid for interoperability across NATO members who could eventually run militarized versions of the same civilian platform.

That ambition lines up with the alliance's broader spending trajectory members agreed last year to lift defense outlays toward 5 percent of GDP by 2035, roughly $3 trillion annually, a wall of money that has drawn General Motors, Ineos, Jaguar Land Rover and Babcock International into the same U.K. bidding war.

Energy storage is the quieter but arguably larger opportunity, and it is where the EV writedowns start to look less like sunk costs and more like unfinished infrastructure. Systems that store electricity for homes, businesses and the grid use technology directly descended from EV battery packs, and demand for that capacity is being pulled forward by two forces converging at once: rising household electricity bills and the extraordinary power appetite of data centers built to run artificial intelligence workloads. Global Market Insights puts the total addressable market at $668.7 billion last year, expanding to roughly $5.12 trillion by 2034 an eightfold increase inside a single decade.

GM's approach is to lean on partnerships rather than build a branded product from scratch. Its Ultium Cells joint venture in Tennessee already supplies cells to LG Energy Solution for storage applications, it has teamed with Redwood Materials to give retired EV batteries a second life on the grid, and it is working with Denver-based Peak Energy on next-generation sodium-ion cells that GM battery and sustainability vice president Kurt Kelty has called "tremendous" in performance terms.

Ford has been more direct, committing $2 billion in December toward a standalone energy business and converting a Kentucky battery plant it built with SK On to produce storage units by late 2027. That effort sits inside Ford's Model e electric-vehicle division, which is still guiding toward $4 billion in losses this year before an expected break-even in 2029 meaning Wall Street is, in effect, being asked to treat energy storage as the offset that finally makes the EV bet pay off, even if the vehicles themselves don't.

Analysts covering both companies describe the shift less as reinvention than as damage control turned opportunistic.

Morningstar's David Whiston has argued that Ford is simply following GM's lead into defense while treating energy as an "underappreciated driver" toward profitability, noting that capacity built for batteries nobody wanted can now chase power demand that utilities can't meet fast enough. Neither business is expected to move the needle on group revenue in the near term GM's projected $700 million in defense sales is a rounding error against a company that generates well over $180 billion a year but that undersells the strategic logic.