When Gordon Murray Automotivebuilds a car, the world listens. His designs define eras. Now, the man behind the McLaren F1 LM is closing a circle with the S1 LM, a naturally aspirated, manual-transmission supercar that reimagines his 1990s masterpiece for a new generation. Only five exist, and the final one, Chassis #1, will be auctioned by RM Sotheby’s during the 2025 Formula 1 Las Vegas Grand Prix, benefiting amfAR’s global research efforts.More than a collector’s car, the S1 LM represents six decades of Murray’s engineering philosophy distilled into one machine: purity, precision, and passion. And for one buyer, it’s also a ticket to sit beside Murray himself to help specify their dream build. The Pinnacle Of Performance, Designed By The Master David Alpert / HotCarsThe S1 LM’s stats could silence even the most jaded collector. Under its carbon-fiber skin lies a 4.3-liter Cosworth-built V12, naturally aspirated and screaming to 12,100 rpm. It produces over 700 horsepower and weighs under 2,110 lbs, numbers that place it among the most extreme analog performance cars ever created. Power is delivered through a six-speed manual gearbox, chosen specifically to preserve the mechanical connection between driver and engine.Every component was designed without compromise. We had the chance to see the S1 LM in person at Monterey Car Week, and it's even more insane in person. The exhaust system is hand-formed from Inconel, wrapped in 18-karat-gold (!) heat shielding, while the rear fan and oil cooling pack were removed to centralize the engine and enhance weight distribution. The result is an orchestra and a soundscape that pays tribute to the F1 GTR’s 1995 Le Mans win.Professor Murray calls the engine “half the car’s soul,” and it shows. And for the winning bidder, they’ll sit beside Gordon Murray himself to co-design their S1 LM’s specification, echoing how customers once tailored their McLaren F1 LMs in the 1990s. That kind of collaboration simply doesn’t exist anywhere else in the automotive world today, and might never happen again. Now that's a deal worth bidding on. A Personal Resurrection Through Engineering David Alpert / HotCarsThe S1 LM isn’t just another Gordon Murray Automotive project; it was deeply personal to the legend himself. Murray designed the car during his recovery from cancer. GMSV CEO Phil Lee told us back in August, “This car is the birth of that collaboration… it got Gordon through the cancer treatment." The project became more than engineering therapy; it was a reaffirmation of everything that’s made him one of the greatest automotive minds alive.For Murray, the S1 LM is about legacy. It celebrates 30 years since the McLaren F1 GTR’s victory at Le Mans, but it also redefines what analogue excellence means in 2025. The car embodies his three lifelong principles: lightness, beauty, and driving perfection. Even the smallest details, machined pedals, custom gauge faces, and hand-stitched interiors, echo his obsession with usability and purity.This emotional connection gives the S1 LM a depth that few supercars can claim. It's special because Murray poured himself into it; a story that began with the F1 LM and matured over time. A Collector’s Dream With Purpose David Alpert / HotCarsWhen Chassis #1 crosses the block at RM Sotheby’s on November 21 at Wynn Las Vegas, it will be more than a high-profile auction. The sale benefits amfAR, the Foundation for AIDS Research, during its Las Vegas Grand Prix Gala. Professor Murray will receive amfAR’s Award of Innovation that night, cementing his impact far beyond the racetrack.Estimated at over $20 million, the S1 LM represents a convergence of art, science, and emotion. It’s the kind of car that belongs to museums yet demands to be driven, reminding us why the connection between human and machine will always matter. As the last example available for sale, it’s not just a collector’s item; it’s the ultimate expression of Murray’s lifetime pursuit of perfection.In a world racing toward automation, the S1 LM stands defiantly human. And in Las Vegas, under the glare of F1 lights, one fortunate bidder will get to own a piece of the man who changed what driving could mean.