PORTLAND, Ore. (Nov. 24, 2025) — Freightliner trucks, a subsidiary of Daimler Truck North America LLC (DTNA), has long defined how freight moves across Earth. That legacy now extends to the edge of space. In an exciting collaboration with Sierra Space, the Fifth Generation Freightliner Cascadia supported high-speed runway tests for Dream Chaser®, their autonomous spaceplane capable of transporting pressurized and unpressurized cargo to and from low Earth orbit. The tests simulated critical dynamics and validated autonomous navigational parameters for Dream Chaser’s landing sequence.

Before the tow tests began, DTNA product validation engineer Nate Fleming transported Dream Chaser approximately ten miles from NASA’s Space Systems Processing Facility (SSPF) facility to the Launch and Landing Facility (LLF). Fleming is the only known driver in history to use a Class 8 tractor to haul a spacecraft on public roads. Sierra Space referred to him as a “test pilot” — a nod to his role in testing new technologies for DTNA and his contribution to validating their own.

“There was a lot riding on this testing,” said Fleming. “Sierra Space trusted me to haul the Dream Chaser and trusted the Freightliner Cascadia to carry it safely. When you’re testing something that’s never been done before, you need to believe in your equipment. I’ve spent years validating new technologies for DTNA, and this was certainly the most memorable drive of my career.”

A Morning on the Runway
Just after sunrise, the sky above the Kennedy Space Center glowed with soft streaks of orange and blue. A team of engineers and technicians stood ready, focused on a sleek, winged vehicle resting quietly on its custom trailer. The vehicle is  Sierra Space’s Dream Chaser spaceplane — a spacecraft engineered to launch vertically inside a rocket fairing, and once in orbit, deploy its wings, and then use its thrusters to maneuver in low Earth orbit before returning to Earth by landing on a commercial runway.

Unlike traditional aircraft, Dream Chaser does not land exclusively on wheels. Instead, it uses tandem rear wheels and - for space and weight savings - a single, reinforced skid plate. To help validate this landing system, an unmodified Cascadia sleeper with 72-inch raised roof helped Dream Chaser reach speeds of up to 70 miles per hour on the 15,000-foot runway – one of the longest runways in the world.

Precision in Motion
The tow test demands more than raw power. It requires smart precision, control, and stability – qualities Freightliner engineered into every aspect of the Fifth Generation Freightliner Cascadia. Its Detroit DD15 engine, DT12 AMT transmission and Detroit axles helped propel and control the specially designed trailer used to test Dream Chaser’s landing sequence.

“Freightliner’s legacy is pioneering freight movement, but we are – and will remain - terrestrially focused,” said David Carson, senior vice president of sales and marketing at DTNA. “Dream Chaser is redefining how cargo moves in space, and that shared spirit of innovation made this partnership a natural fit. We’re proud they selected the Fifth Generation Cascadia to support this groundbreaking effort.”

A Spaceplane with a Mission
Dream Chaser is a flexible, reusable spaceplane designed to deliver payloads to space and gently return to Earth. Its ability to land on a runway, like the retired space shuttle, allows it to touch down closer to cargo destinations. This reduces turnaround time for offloading and processing cargo and expands access to space.

“When you're preparing a new spacecraft for its first mission, every detail matters,” said Klint Combs, vice president – test engineering at Sierra Space. “We chose Freightliner because the Fifth Generation Cascadia offers the kind of precision and safety systems that give our team confidence. This test is about proving we can land safely, reliably, and repeatedly and Freightliner helped us take a major step toward that goal.”

Freightliner’s role in this test highlights its commitment to supporting innovation wherever it moves. Whether on highways, runways, or in support of orbital missions, the Fifth Generation Cascadia is engineered to meet the demands of the future.

Read more about the Dream Chaser Tow Test at SierraSpace.com

About Freightliner
Freightliner Trucks is a division of Daimler Truck North America LLC, headquartered in Portland, Oregon. With 80 years of experience, Freightliner produces and markets medium-duty and heavy-duty trucks as the leading heavy-duty truck brand in North America. DTNA is a subsidiary of Daimler Truck Holding AG (DTG), one of the world’s leading commercial vehicle manufacturers.

About Daimler Truck North America
Daimler Truck North America LLC (DTNA), headquartered in Portland, Oregon, is the largest manufacturer of heavy-duty trucks in North America and a leading provider of innovative products, services, and technologies for the commercial transportation industry. DTNA designs, engineers, manufactures and markets medium- and heavy-duty trucks, school buses, vehicle chassis and related technologies and components under the Freightliner, Western Star, Thomas Built Buses, Freightliner Custom Chassis Corp and Detroit brands. As a subsidiary of Daimler Truck, one of the world’s leading commercial vehicle manufacturers, DTNA is dedicated to delivering exceptional value and support to its customers - helping them keep the world moving.