The modern automotive industry is obsessed with heavy, overly complicated, and astronomically expensive supercars. But one independent British creator is proving you don't need millions of dollars or a massive factory to build an incredible machine.A builder operating the YouTube channel Gasolini has constructed a fully bespoke, highly aerodynamic sports car from scratch for roughly £5,000 (about $6,400). Driven by a passion for sustainability and classic motorsport, he believes his radical DIY build could spark an entirely new era of grassroots racing.The custom vehicle is a masterclass in extreme minimalism and aerodynamic efficiency. Drawing inspiration from 19th-century aerodynamicist George Cayley and classic Lotus 7-style "Locost" kit cars, the builder constructed a bespoke space-frame chassis and wrapped it in a lightweight fiberglass and flexible ply shell."This is a lightweight, fuel-efficient sports car that weighs 415 kg, revs to 9,000 RPM, and it's incredible fun to drive," the builder explained in his video breakdown.AdvertisementAdvertisementTo achieve that screaming redline, the car utilizes a salvaged 2017 Honda CBR 500R motorcycle engine mated to a six-speed sequential gearbox and a Ford Sierra differential. The aesthetic is wonderfully retro-futuristic, characterized by fully enclosed wheel spats and a smooth teardrop fuselage. "Aesthetically, I thought it might look like a cool sort of 1990s sci-fi movie car, which I think it does," he noted with a smile.Despite its radical appearance, it was engineered for pure practicality. The entire body shell can be removed in minutes via Zeus fasteners, and it relies on cheap, readily available suspension and braking components. The builder claims a low-revving car engine swap could push the chassis well past the 100-mpg mark.The Dawn of "Hypermile Racing"The creator isn't just trying to build a one-off curiosity; he wants to revive the spirit of 1920s "cycle car" racing for the modern era. Because vintage car parts have become prohibitively expensive, he proposes a new, highly accessible motorsport category focused entirely on efficiency."I'm going to suggest a new form of racing, hyper mile racing, which would be a sort of modern version of cycle car racing," he announced.AdvertisementAdvertisementThe proposed rules are brilliantly simple: competing cars must weigh under 450 kilograms (990 lbs) and have at least 75 percent of their wheels covered for aerodynamic efficiency. Instead of unlimited fuel, races would be capped by strict fuel limits—for example, requiring cars to average 40 mpg around a circuit. The car that completes the distance the fastest within that strict fuel limit wins, forcing builders to innovate with aerodynamics and lightweight composites rather than simply buying more horsepower.For automotive enthusiasts intimidated by the prospect of a scratch-built car, the builder offered some reassuring advice. His entire vehicle was constructed in a tiny garage powered by a single double-plug electrical socket, utilizing basic hand tools and a welder.There is no prerequisite to be a master fabricator to build your own car. The creator learned his techniques from friends and online tutorials, emphasizing that the real barrier to entry is mental. "Out of all the skills required, I would say that imagination and self-belief are far and away the most important," he encouraged.By releasing detailed build manuals and sharing his techniques, Gasolini hopes to inspire a new generation to ditch bloated modern cars and start building their own sustainable machines.