I'm sure early ICE designs had a few teething problems as well. Many EVs and hybrids sold over the last 2 decades have proven to be quite reliable. In the case of the Bolt and Kona there is a single physical defect (i.e. I personally think it's the same issue on both) which is only possible to correct with replacement of all affected cells. GM's software-only approach puts them in a situation which this week's latest Bolt fire should make them rethink.