First car to break the sound barrier, ThrustSSC in 1997, showed that engines designed for fighter jets could power wheels beyond imagination.

Why ThrustSSC needed jet power

At ordinary road speeds, a car pushes air aside and its engine drives the wheels through a transmission. ThrustSSC faced a different problem: reaching supersonic speed, where air becomes a powerful source of drag and can behave in ways that unsettle a vehicle. Its two jet engines produced thrust by blasting fast-moving exhaust backward. That push moved the car forward; the wheels rolled and steered it, but they were not driven by the engines in the usual way.

The aircraft-derived engines supplied the sustained thrust needed to overcome aerodynamic resistance at extreme speed. But adding power alone would not make a safe record car. The vehicle also had to remain pointed straight and keep its tires and structure intact as forces rose sharply with speed.

The ground became part of the design

A jet can fly over bumps; a land-speed car cannot. ThrustSSC needed a long, firm, open surface, with enough room to accelerate and then slow down. Black Rock Desert’s dry lake bed offered a broad, level course, but its surface still had to be inspected and prepared. At these speeds, a small irregularity could threaten control.

The car’s shape mattered just as much. Airflow can create lift, pressing a vehicle upward rather than onto the ground, so the body and its aerodynamic balance had to help keep it stable. Its specialized wheels also had to withstand enormous rotational forces. The challenge was not simply to make a car fast, but to make every part behave predictably in a regime ordinary vehicles never encounter.

Crossing the sound barrier

In October 1997, ThrustSSC, driven by Andy Green, became the first car to travel faster than sound over land. Once it passed that threshold, pressure disturbances could no longer move ahead of it through the air; they gathered into shock waves that produced a sonic boom.

The achievement depended on treating the vehicle as a system: jet thrust, aerodynamic stability, durable wheels, careful steering and a suitable course all had to work together. The desert was not just a backdrop—it was the runway that made a ground-based supersonic run possible.