Green’s Dictionary of Slang

vroom v.

also varoom, voom, vroomph
[echoic of the sound of an engine]

1. (US) to go fast, esp. to drive a vehicle at speed; thus vroom-vrooming n.

[[US]W. Winchell Your Broadway & Mine 29 Apr. [synd. col.] Dora Wilson [...] would very much like to know what ‘voom-voom’ means, because Lois (Lipstick) Long was thus referred to here [...] Voom-voom is slanguage for a nice dame].
[UK]A. Buckeridge Jennings’ Diary 73: You needn’t have gone vooming down the hill.
[US]New Yorker 21 Jan. 76: They go varooming all over the desert in a couple of jeeps.
[US]L. Bangs in Psychotic Reactions (1988) 11: Turning the key in the ignition and varooming off high as a hotrodder.
[UK]T. Wilkinson Down and Out 85: ‘I want a car that does two thousand miles an hour!’ he said, skimming his hand in front of his nose. ‘Vrooommph!’.
[US]S. Morgan Homeboy 62: He vroomed straight through the bevelled leadglass doors of Cosimo’s Billiard Parlor.
[UK]Indep. Rev. 15 Sept. 4: It’s fearfully good fun all the vroom-vrooming and then having to slam on the brakes.
[US]Ruderman & Laker Busted 156: [W]e humans are really nothing more than souped-up monkeys who vroom down highways at eighty miles per hour.

2. attrib. use of sense 1.

[SA]M. Mutloatse Forced Landing 3: The vroom generation has virtually never heard of black writers.