A four-wheeled horse-drawn carriage, designed in 1839. It had an open seat for the driver in front of the closed cabin for two or four passengers. Named after its designer Henry Peter, 1st Baron Brougham and Vaux (1778–1868).
‘Topsham, brougham, renown, but known,
Knowledge, done, lone, gone, none, tone,’
– Gerard Nolst Trenité, The Chaos
Knowledge Guild 
/ˈbruːəm/ and /ˈvoʊks/ as in 1st Baron Brougham and Vaux.
I’m surprised it wasn’t called a Vaux-Wagon —
That’s hilarious, actually!