zzrodder
It ain't grey hair, it's chrome!
I read a little on Soundracer... seems the "plug and play" device detects "noise" produced by an alternator, right through the lighter socket. (If I understand the info correctly.)
The simulator box seems fairly adaptable and takes its signal from a "hall effect" sensor... similar to a crank trigger ignition. In that instance, all you need is a rotating object and a place to glue 4 magnets in close proximity to the sensor... axle shaft, wheel hub, anything that spins relative to ground speed/RPM...
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Thanks Doc. I emailed the company that makes the Soundracer products (in Sweden!), I found on their website that they have a system for EVs (electric vehicles) that uses the Hall effect sensor you mentioned - have to wait and see what comes of it.