- A commuter says on Twitter that he's fed up with service after a BART electrical problem
- BART tweets back that an aging infrastructure is to blame
- So begins a fiery exchange between BART and commuters about "This Is Our Reality"
(CNN)It began as a gripe about train service on Twitter. Then it exploded into a surprising exchange when San Francisco's BART system didn't back down, describing its aging infrastructure as, "This is our reality."