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... whilst I don't understand why folk have a camera (expensive or otherwise) and never experiment with things like shutters speeds in order to create something like the above.
Exactly.
I'm with you on this, not that I ever experiment much these days - but years ago I used to when it was my hobby (and erstwhile job) these things can be great fun.
It's called a "long exposure" ... 1 or 2 seconds might be long enough, which is quite long considering your normal outdoor daylight shot requires something between 1/100th of a sec and 1/1000th of a sec. A neutral density (ND) filter helps too.