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See also: | Drivers, Teams, Entrants, Car Models, Car Manufacturers, Tyre Manufacturers, Lubricant Manufacturers, Car Numbers, Sponsors, Sponsor Industries, Designers |
21st Fastest Laps in a Season
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until 1978 Budweiser Trophy
Ignore Indy 500 races
Include non-championship races
Pos | Engine Manufacturer | Year | 21st Fastest Laps |
No Engine Manufacturers |
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