LRV4 2154 undergoing testing and in passenger service

Here we see brand new LRV4 2154 going through burn-in testing in October and most recently on its first day of service last week (December 21). This car just happened to both be burning in and entering service on two of my recent trips to San Francisco. Coincidentally, it was paired with 2056, which I was also able to film during both its testing phase and on its first day of service.