Silly question, but I’ll ask it anyway.

Nah ebm.
GK time machine is the real deal!

I spend most of my time in the future. I only come back here for the jokes. Besides, they don’t have audio forums in the future. The trolls got too out of control. 

You could do it. It would probably sound awful with most spark plug wires.  Most spark plug wires are highly inductive (and resistive) stainless steel wire around a core that may or may not be conductive carbon. I guess if you like your music really warm, you may like them :-)

Most domestic vehicles use spark plug wires with a fiber glass core covered in latex graphite, which provides between 10,000 and 12,000 ohms of resistance per foot of wire.  But this varies with wire type   

Do you really want to put all of that resistance in the signal path???

https://youtu.be/FpPBxN_FzmA

Not very well if the wire is of type 1) distributed (carbon core) or 2) fixed resistor.  They have more resistance than copper to reduce RFI interference.  It does not matter at 100,000 volts in the car but it does in an amplifier.