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| Category | USAC Roadster | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Constructor | Granatelli | ||||||||
| Designer(s) | Ken Wallis Andy Granatelli | ||||||||
| Technical specifications | |||||||||
| Chassis | Space frame | ||||||||
| Suspension (front) | Double wishbone with coil spring | ||||||||
| Suspension (rear) | Double wishbone with coil spring | ||||||||
| Engine | United Aircraft of Canada ST6B-62 gas turbine, mid-mounted | ||||||||
| Transmission | 1-speed | ||||||||
| Tires | Firestone | ||||||||
| Competition history | |||||||||
| Notable entrants |  STP Division of Studebaker Corp. | ||||||||
| Notable drivers | Parnelli Jones Joe Leonard | ||||||||
| Debut | 1967 Indianapolis 500 | ||||||||
| Last season | 1968 | ||||||||
| |||||||||
The STP-Paxton Turbocar was an American racing car, designed by Ken Wallis as the STP entry in the Indianapolis 500. Parnelli Jones drove it in the 1967 event. After leading for much of the race, a transmission failure with only eight miles left ended the run. It crashed during qualification for the 1968 race; the damage was not fixed and the car ended its career.