Caveat - being a bit of a curmudgeon*, I have some very opinionated ideas, that may, or may not be correct.
Over the years the engine vs motor terminology has caused more than a few holes in my tongue. Short and sweet of it is that I was taught...
--- A
motor uses electricity to create motion.
--- An
engine is an internal combustion device that uses a fuel source (ie: gasoline or diesel) to create motion.
Hence, there may be 'motor's on a Spyder but, the 998cc Rotax V-twin, internal combustion engine is NOT one of them.
Thanks for the soap box, I will now try to do something productive today.
*
curmudgeon - An ill-tempered (and frequently
old) person full of
stubborn ideas or opinions.