I will believe it when I see it.

Assuming that some day I have a pressing need to travel from Bakersfield to Fresno, that is, because as I understand it there's still no commitment to construct the other parts. Train advocates assume that once the middle part is built the rest will inevitably follow, while train skeptics are looking forward to mocking the puny ridership numbers on the nowhere-to-nowhere line and saying "I told you so".