> Also, effects mostly EVs, but not only. (If the EV motor was the group usually logged to the opened AWS bucket, I don't understand how there were ICE or possibly hybrid cars involved in the leak.)

I can't parse this. Is there a missing word? Mostly implies other possible inputs but the last part of that sentence specifically says this is confusing. Why is it hard to understand how ICE or Hybrid groups also had access to a bucket EVs mostly had access to?