"Flivver" in OED

[Dave Wilton]

>         Although I didn't see any pre-WWI uses of "flivver"
> (assuming, as I do, that WWI started in 1914), I was struck
> by the unfamiliar term, "flivver squad," in 1919:
>
>         >>There was a telephone call at the police station
> that there were numerous shots being fired at Forty-Fourth
> place and Shields avenue, and the 'flivver squad' jumped into
> a Ford and went there as fast as they could. <<

"Flivver squad" is flying squad of police equipped with Model-Ts for
transport. The LOC's American Memory database has a Chicago Daily News photo
of a Chicago "flivver squad" standing next to their cars, but the date for
this photo is 1925.