By Luc Olinga The CEO of Tesla is resentful and never misses an opportunity to attack the Detroit giant. Elon Musk rarely talks about Tesla’s (TSLA) – Get Tesla Inc. Report rivals. The CEO’s stance comes down to: He doesn’t want to promote their brands. These companies, from startups to veteran auto groups, are positioned mainly relative to Tesla, the leader in and reference point for premium electric vehicles. When new EV models are unveiled, they’re presented vis-a-vis Tesla’s offerings. But every once in a while Musk makes an exception when he is asked about the struggles of young electric …