the token that will be issued by toyota will act as a gift for its own employees and in this case, I think that coin can be exchanged with the goods like a voucher or something else. I think it will act as a reward for the performance of its employees. That means this chain will be a private blockchain but it's also being used to create a to be connected with the partners too.
I guess the 2,500 employees are used for testing the currency/platform. An article says it's in pilot/test stage.
Well, I don't see why companies should not make their currencies/tokens decentralized, transparent, immutable etc. These features would help increase the integrity of their platforms.