You are listening to Elemental Economics from the Business Daily team with me, Justin Rolach.

This is the programme that explains how the elements of the periodic table are the real driving force of the world economy.

And today, we come to you with

all the sound and fury of a motorcycle gang. That's the track that opened Marlon Brando's famous movie

about a biker gang, the wild one. And today's element links, as you will discover,

the leather jacket he wore, the Harley Davidson he rode,

and the flick knife hidden in his back pocket.

Yes, we are talking chromium.

Now that is a very distinctive sound, so the challenge for you is to guess what product we're going to be looking at.

And it shouldn't really be that difficult, should it, because we've come to one of Harley Davidson's biggest and oldest European dealerships, the War dealership in Chelsea, and I'm with John War, who's the

grandson of the original founder of this business, is that right? Yes, that's right. My grandfather

founded wars in 1924, but Harley were already 20 years old by then. And of course, Chrome has

always been associated with the Harley, hasn't it?

I mean, we've got one in front of us. Just describe to me what we're looking at.

The 2015, the very latest Harley-Davson-1200cc sportsster in vivid black colour.

Not as vivid as the chrome.

No, so the engine is highlighted in gorgeous chrome, as are the exhaust pipes.

Unlike an engine that might be hidden away, for example, in the car, it's all on show with the Harley.

And what's amazing about it is that the chrome reflects back on itself.

So you've got all these round surfaces capturing images of the bike.

Now, it's not just chrome plating though, is it?

No, there's chrome alloys in various parts of the engine

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