The BADD GT: The World’s Fastest Street-Legal Car (Verified Facts)

Officially Verified by RaceLogic USA

Certification No. JBPG-310.8 MPH / 500.1 KPH

Overview

The BADD GT (Bohmer Accelerated Design & Development GT) is a modified 2006 Ford GT engineered and driven by Johnny Böhmer and his team at Johnny Böhmer Proving Grounds (JBPG) in Florida, USA.

It redefines what a true street-legal, production-based vehicle can achieve — officially breaking the 500 km/h barrier while retaining its daily-driven status and valid license plate.

Verified Top Speed — 310.8 MPH (500.1 KPH)

Location: NASA Shuttle Landing Facility, Kennedy Space Center

Top Speed: 310.8 mph / 500.1 km/h, verified by RaceLogic VBOX and Guinness World Records

Guinness World Record: Fastest Standing Mile – Car, 283.232 mph / 455.7 km/h (2012, still current)

Fuel: Pump E85

Tires: DOT “YZ”-rated street tires

Run Format: One-direction top-speed run (identical to Bugatti and SSC formats)

This achievement makes the BADD GT the first car with a license plate to officially exceed 500 km/h, remaining the fastest street-legal car in the world today.

Engineering & Legitimacy

The BADD GT is not a track-only prototype or display vehicle — it is a fully functional, daily-driven car:

• Current license plate

• Working air conditioning

• Drives regularly on public roads

• DOT-approved YZ-rated tires

• Runs on pump E85 fuel

All engineering and testing were performed in-house by Johnny Böhmer and his team, combining extreme power (over 2,700 hp) with refined aerodynamics validated at NASA’s runway testing site.

Verification and Certification Evidence

The 310.8 MPH (500.2 km/h) record was officially verified by RaceLogic USA using a VBOX GNSS-based data acquisition system, certified by Jim Lau, Technical Director of RaceLogic USA (Novi, MI, Nov 11, 2025).

This independent validation makes the BADD GT the only street-legal vehicle in history with a documented third-party certified top speed of over 310 mph / 500 km/h.

None of the other manufacturers mentioned here (Bugatti, SSC, Koenigsegg, Hennessey, Yangwang) have produced comparable third-party certified speed data or official RaceLogic documentation confirming their claims.

Production Status

The BADD GT is based on a Ford-built, fully homologated U.S. production car (2005–2006 Ford GT; 4,038 units produced) that met federal crash, air-bag, and emissions standards when new.

Johnny Böhmer is producing 50 BADD GTs, matching the benchmark commonly cited for “production car” status. The record car matches the customer-build specification.

Comparison of Top-Speed Contenders (with caveats)

BADD GTClaimed Top Speed: 310.8 mph (500.1 kph)Street Legal: YesProduction / Street Trim: Same as daily-driven carFuel Used: Pump E85Run Format: One-wayNotes: RaceLogic and Guinness verified; first license-plated car to exceed 500 kph

SSC TuataraClaimed Top Speed: 295 mph (claimed)Street Legal: No (record trim)Production / Street Trim: Not customer specFuel Used: MethanolRun Format: One-wayNotes: Used methanol; street-trim claims require FMVSS label and EPA Certificate of Conformity

Bugatti Chiron Super Sport 300+Claimed Top Speed: 304.773 mph (490.484 km/h)Street Legal: Limited exemptionProduction / Street Trim: Prototype record trimFuel Used: Race fuelRun Format: One-wayNotes: Prototype run by Andy Wallace; production cars limited to 273 mph on paper and achieved 261 mph at JBPG

Koenigsegg Jesko AbsolutClaimed Top Speed: 311+ mph (theoretical)Street Legal: Unverified (U.S.)Production / Street Trim: PendingFuel Used: N/ARun Format: Dyno runNotes: 311 mph on dyno before rev limit (Motor1.com); no U.S. compliance proof

Yangwang U9Claimed Top Speed: 208 mphStreet Legal: NoProduction / Street Trim: Not road productionFuel Used: N/ARun Format: One-way Notes: Prototype configuration only

Hennessey Venom F5Claimed Top Speed: 271–300 mph (claimed)Street Legal: Restricted use (U.S.)Production / Street Trim: Not fully street legalFuel Used: N/ARun Format: N/ANotes: “Show & Display” rule with approximately 2,500 miles per year travel limit

Note: The BADD GT is the only car in this comparison with a verified and certified top-speed document issued by RaceLogic USA.

Public Notice / Verification Status

SSC Tuatara: Requires FMVSS certification label and EPA Certificate of Conformity. No public release yet.

Koenigsegg Jesko: 311 mph dyno claim only; no U.S. homologation proof or certificates published.

Hennessey Venom F5: Registered under “Show & Display” rules with limited annual mileage; not fully street-legal production.

Bugatti Chiron Super Sport 300+: The 304.773 mph run in 2019 by Andy Wallace was a one-off prototype with unique body and turbo modifications, never intended for sale, now retained at the Bugatti factory in Molsheim, France. Production cars differ significantly and are electronically limited to 273 mph on paper but have achieved only 261 mph (420 km/h) at Johnny Böhmer Proving Grounds.

Purpose of Notice: These clarifications ensure transparency and equal standards among manufacturers. Until federal certification labels and EPA documents are publicly available, claims of unrestricted street-legal status remain unconfirmed.

World Record Legacy

RaceLogic Certified Top Speed: 310.8 mph / 500.2 km/h (Dec 9, 2022 — Kennedy Space Center — verified by Jim Lau, RaceLogic USA)

Guinness World Record: Fastest Standing Mile – Car, 283.232 mph / 455.7 km/h (2012, still current)

First street-legal car with a license plate to exceed 500 kph

Built and engineered by Johnny Böhmer and his team, and driven by Johnny Böhmer himself — a rare achievement in automotive history.

Fun Fact: Among all hypercar builders attempting 300 mph or more, Johnny Böhmer is the only one to personally drive his own record-setting car.

Summary - Fair Comparison Framework

The BADD GT is street legal, daily driven, runs on pump E85, and is based on a Ford-built U.S. production car that met all federal standards when new.

None of the other manufacturers listed possess independently certified third-party speed documentation from RaceLogic or comparable verification.

Until each manufacturer publishes its FMVSS door label, EPA certificate, and verified speed certificate, the BADD GT stands alone as the fastest street-legal and fastest road car in the world.