This looks like your run-of-the-mill-at-least-if-your-mill-is-located-on-a-salt-flat rocket car. Thing is, that's water vapor coming out the back of two steam turbines. Target speed is actually modest 170mph for this british team. That said, they'd be breaking a century-old record.
Wired nailed the appeal: "quaint and cool." Can't you see two chaps on a horse-drawn number in bowlers and riding boots on grass by the test-road exclaiming, "Look Kensington, it's those South Hampton boys and their vapor-spewing contraption." (zoom!) "I say! But, that does put a tiddle in the ol' wink doesn't it?"