A hydrogen powered CX would excite me

You do realise that a hydrogen powered car is electric, don't you mate? There's no engine or anything, the hydrogen is just an energy storage medium just like batteries. Apart from the well to wheel efficiency drawback, there's a long way to go before they can get decent life out of the fuel cells.
I'm afraid you won't be making any V8 noises unless you buy yourself one of those gizmos

Well of course I do mate, it would be very difficult not to know that with the plethora of information being pushed around these days

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I fancy an onboard power source is my point and not to be solely reliant on batteries, having had a lifetime of working in and around them I am less than impressed with all the claims currently "floating" around.
They still haven't matched the performance of the old Nickel Iron cells from 1910

I'll make a sound track of my Plus 8 before that day arrives synched to the revs of the motors.. Meantime I'll carry on enjoying the real thing roaring around Dartmoor.