According to German Natopedia it's a shuttle that Tesla pays for and is allowed to operate only until the regular train station is moved by a few hundred meters closer to the factory (in 2026). So I guess in this case it absolutely makes sense to lease a battery powered train for the trainsition period.
But yeah, the reporting is pure brain worms for an entirely mundane regional public transport process.
I think "logical" for most libs (at least in Europe) just means "common-sense", i.e. propaganda.