TSLA will destroy them due to:
1. Union labor wage. TSLA is non-union and much higher level of robots and mechanization.
2. Dealer networks siphon off 5-6 of profits. TSLA has none.
3. TSLA is much further down the experience curve. Its designs are superior and unit costs are much lower.
If the US Big3 can solve the first 2 problems, then they can try to catch up on number 3. If not, they will go the way of the Studebaker.