From doorstep to supply depot, this EV truck maker aims to tackle both

Across the U. S. , a final-mile network operates in a similar yet predictable manner: a small truck, a short route, one person in the cab. The U. S. Army runs that same network, except it has more challenges for the person in the cab and the route. Harbinger, the Garden Grove, Calif.

, builder of electric and hybrid medium-duty chassis, is supplying prototype trucks to tackle what the Army refers to as the last tactical mile. It started with American Rheinmetall, which was awarded an 18-month Army contract on July 31 for Project Sustainment.

It is an effort to field hybrid-powered uncrewed ground vehicles that move supplies to and from the forward line of troops. American Rheinmetall holds the award as prime contractor, and Harbinger is a tier-one supplier building the platform. It is Harbinger’s first defense contract. What Harbinger is shipping is not a truck with the driver removed.

There is no cab, no steering wheel and no pedals, so no Soldier is available to take over when the autonomy quits. “This is an AGV product. There’s no steering wheel, there’s no pedals. It is not optionally manned. It is a moving trailer-like platform,” said John Harris, co-founder and CEO of Harbinger, in an interview with FreightWaves.

From the Doorstep to the Last Tactical Mile The Army’s resupply architecture already maps onto a distribution network. Main trains haul bulk to the brigade or battalion, those stocks get pushed down to company-level formations, and what runs the final leg today is a five-ton or a deuce-and-a-half with Soldiers in it.

“They’re really looking at how do we take that five-ton, deuce-and-a-half type size vehicle and how do we remove some of the Soldiers from doing that very exposed mission set,” said Adam Horton, director of business development at American Rheinmetall, in an interview with FreightWaves.

That errand is one of the dull, dangerous and dirty jobs the Army wants automated. To copy it, the military supply network is taking a page from civilian commercial last-mile applications.

“It’s taking a lot of cues from what Amazon, UPS, FedEx are doing where you have those smaller trucks that are getting out there to go that last delivery mile if you will,” Horton said.

Harbinger builds Class 4 through Class 6 chassis, and Chris Haag, vice president for business development and strategy at American Rheinmetall, described the Project Sustainment vehicle as built off “kind of a Class 5 / Class 6 type truck which does door-to-door delivery at that last tactical mile commercially.”

Silent Running Inside the Drone Kill Zone The first key clarification: these are hybrid drivetrains. “There’s no EVs in this contract, only hybrids,” Harris said. The architecture is a series hybrid that runs in either mode. The reason is geography paired with range.

Harbinger’s plug-in hybrid chassis is rated up to 500 miles commercially, and that number sets how far behind the front the supply node can sit.

“When we’re within the sort of drone kill zone, the 20 to 30 miles of the front line, it’s very compelling to be able to run as an EV, but we also don’t want to have to refuel or reload the vehicle only 30 miles out,” Harris said.

Electric mode buys concealment, something the modern combat zone makes challenging because of the constant contest between thermal imagery and electronic warfare capabilities.

“We can have near-zero noise, near-zero thermal signature, all of these things that make it a really compelling platform to move up to the front line for sustainment purposes without being a huge obvious target because it’s an engine running,” Harris said.

The receiving unit has no fuel, no maintenance bay and no recovery asset, so a vehicle that breaks at the company formation stays broken. “You’re not going on hardball roads with lanes and markers,” Horton said. “So the autonomy has to be much more robust in order to accomplish that mission.”

Built By-Wire From Day One Harbinger’s claim on the platform work rests on decisions made before it had a defense customer. The chassis was specified steer-by-wire and brake-by-wire with redundant power from the start. Vertical integration bought both the cost and the capability, and the actuation hardware that autonomy needs is already on the vehicle.

“If we hadn’t vertically integrated, if we’d said we’ll just go to a big steering supplier and buy what they’ve got, it would have been more expensive and dramatically less capable, because there just aren’t systems off the shelf that have this kind of by-wire functionality, in particular in the commercial vehicle segment,” Harris said.

Everybody’s Piece of the Puzzle Four companies are on the contract. Each carries a different problem to solve. Forterra supplies cross-country Level 5 autonomy for terrain with no roads or lane markings. Primordial Labs supplies Anura, a natural-language interface that enables hands-free operation and is intended to improve the Soldier-to-robot ratio.

American Rheinmetall adds the defense-specific har