Ah yeah, I meant to say inverters. Just used to calling them 'motors' as a catch-all term for what's going on to make the wheels turn. So would the case with the R142 vs. the R160s be that the inverters are slightly different on each car, so they have slight differences in sounds (versus the inverters on, say, the R142As/143s/188s, or the Siemens R160s, or the R179s).