An appeal to authority world be “smart guy says hydrogen is dead”
I was keying in on OP’s statement:
Yes, world’s largest car manufacturer doesn’t know what they are talking about when they talk about car manufacturing.
With the sarcasm taken into account, the intent appears to be:
The world’s largest car manufacturer must know what they are talking about when they talk about car manufacturing.
Taken with OP’s other arguments, he clearly believes Toyota shouldn’t be questioned simply due to Toyota is the largest and most profitable car company (thus far, anyway). I’m pretty sure that’s an appeal to authority.