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.
Pah, scientists. Always so pessimistic. Do you remember what they said about Corona and masking? And it wasn't so bad at all, barely a cold. Few million old, poor people died but look at the economy!