Black on black is all very well but IMHO it needs a wood panel dash and perhaps some wood trim on the doors.
The wheels go well with the Plus 8 Super Sports style of the car but a touring version would look good with more elegant wheels and would need a spare.
Is there space for a set of golf clubs?

(or at least the beauty case

)
Agreed, but it is only a prototype. I am sure that when they build a demo it will have a more plush spec.
I understand that there will be other wheel options, as for the spare see my previous reply.
A luggage rack is being developed and there are even rumours of specially fitted luggage, though whether this incorporates a beauty case I can't say!