The documented competition record — Portola and Indianapolis, 1911

What the record does hold for the Mishawaka marque is one season, and it is a real one. On 22 February 1911, at the Panama-Pacific road meeting at Portola, in Alameda County, California, William Turner drove the Amplex in the meeting's heavy-car race, the St. Francis Hotel Trophy, over 152.922 miles: the AAA championship record compiled from the contemporary motoring press scores him fourth, thirteen of fourteen laps completed and flagged, fifty championship points under the retroactive scoring — behind Charles Merz's winning National, in a field of the country's serious makes. Turner started the Amplex again the same day in the meeting's free-for-all, and there the minor records diverge: Racing-Reference scores him fourth on four laps with his status given as "wheel," while Motor Age's season review of 1911 road racing lists the Amplex among the cars that "also started," at two laps. Both lap counts print; the start itself is not in dispute. Motor Age's Record of Cars for the 1911 road-racing season closes the marque's road record in a line: "Unplaced: … Amplex, 2" — two starts, no placing, the Portola pair.

Three months later the marque ran the race the automobiles section of this history owns whole, and this section carries it at pointer: the first Indianapolis 500, 30 May 1911, with two Mishawaka cars in the field — Turner's No. 12, home eighth at 200 laps in 7:15:56, an average of 68.82 mph, and Arthur Greiner's No. 44, wrecked in the race's first fatal accident, Greiner's riding mechanic Sam Dickson killed — the 500's first fatality, on lap 12 by the race record the automobiles file follows and lap 13 in other accounts, both numbers printed there. One divergence surfaced belongs on the assembly table: the championship compilation's box score for the 1911 race names Emmett Ward as the No. 12 car's riding mechanic and Walter Jones as Turner's relief driver, where the race record the automobiles file follows names Walter Jones as the riding mechanic. The two accounts cannot both be right, and this section prints the divergence rather than choosing. Turner's 1911 championship line closes the marque's season: three races run, ninety points — fifty at Portola, forty at Indianapolis. De Kever's one racing sentence the record sustains stands at the end of his paragraph: "Amplex never returned to the Brickyard." It never raced anywhere in the record again.

• Portola, 22 February 1911: the AAA championship record compiled from The Automobile, Horseless Age, and Motor Age (Champ Car Stats; Motor Sport Magazine data compilation) — Turner fourth in the St. Francis Hotel Trophy, 13 of 14 laps, flagged, 50 points; Racing-Reference's Portola row (fourth, 4 of 15 laps, status "wheel"); Motor Age's 1911 road-racing review ("also started," 2 laps; Record of Cars: "Unplaced: … Amplex, 2")
• Turner's 1911 line — three races, ninety points: Champ Car Stats driver record
• The 1911 Indianapolis 500 — eighth place, the No. 44 wreck, Dickson's death, lap 12 vs. lap 13: the automobiles section of this history, at pointer
• The Ward/Jones divergence: the championship compilation's 1911 box score against the race record carried in the automobiles section — flagged for assembly, not resolved here