He Built a Custom V8 Race Car in His Garage With Zero Experience—Here is the $10 Million Reveal

By: Rahaan Mazumder Published: October 5, 2026 – 12:30 pm Rahaan Mazumder October 5, 2026 Add MotorBiscuit as a preferred source What do you do if your absolute dream car is one of the rarest, most expensive vehicles on the planet, and you don’t have an eight-figure bank account? If you are YouTube creator and builder Markus Rubba, you just start welding steel tubing in your garage and build the car yourself.

In a massive milestone video for his channel, Rubba finally took his scratch-built, tube-chassis race car out for its maiden voyage. The video is a masterclass in DIY engineering, chaotic problem-solving, and pure automotive adrenaline.

“This is my homemade race car and today for the first time ever it is going to hit the streets for a real drive,” Rubba explained. “Over 2 years ago I started building this car in my garage with literally no experience and after thousands of hours of work we actually have something that kind of resembles a car”.

Before Rubba could even think about hitting the road, he had to overcome a massive drivetrain headache.

Because he is building a mid-engine layout on a budget, Rubba had to create an unholy alliance of parts. “This is a Lexus V8 out of an LS400, and this is a transaxle out of an Audi A4,” he explained. “Two completely different manufacturers. These drivetrain parts were never meant to fit together and so 2 years ago I decided to try to change that”.

Getting the clutch to engage required custom adapter plates, heavy grinding on the bell housing, and multiple re-welds.

Even crazier was the shift linkage. Because the Audi transmission was originally designed to sit in front of the driver, Rubba couldn’t just bolt on a stock shifter. Instead, he 3D-scanned the transmission, designed a custom pivot arm linkage on his computer, and used a Maker Z1 desktop CNC machine to cut the flawless aluminum shift components right in his bedroom.

The “Flintstones” Test Drive With the drivetrain sorted, a custom bazooka exhaust tack-welded in, and some scrap plywood wedged into the frame to act as a “hardwood floor,” Rubba loaded the bare tube chassis onto a trailer and headed for the country roads.

The initial test run down the driveway proved how sketchy the setup really was. “It’s so scary having to hold your feet up; it’s like… a Flintstones car,” Rubba joked with his friends. “Except if you put your feet on the ground, it just rips them off”.

Out on the open road, the V8 roared to life. Rubba and his friends took turns ripping the skeletal chassis down the asphalt, hitting the top of the gears and doing massive flybys.

“This is dumb. We don’t even have seat belts, we don’t have… seats, we don’t have a floor. Well we have a floor you know whatever,” Rubba laughed mid-drive.

Inevitably, the chaotic fun came to a grinding halt. Feeling confident in his suspension welds, Rubba attempted to do a burnout, which immediately snapped his custom-built flywheel, abruptly ending the test day.

Despite the broken flywheel, the test drive was a massive success, allowing Rubba to finally reveal the ultimate goal of the project. Pulling out a custom fiberglass roof scoop and a massive headlight, he announced the body kit that will eventually cover the steel chassis.

“This is a Mercedes-Benz CLK GTR,” Rubba proudly revealed to his audience. “It has been my dream car for quite some time and I’ve always wanted to see one, but there’s only 25 of them in existence and they’re upwards of $10 million a piece”.

With the chassis proven and the engine running, Rubba’s next phase of the build will focus entirely on fiberglass, bodywork, and turning his garage-built skeleton into a legendary 90s Le Mans icon.

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Home » He Built a Custom V8 Race Car in His Garage With Zero Experience—Here is the $10 Million Reveal

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