They had a rollout schedule but it was way too aggressive compared to where the technology is right now. The number of electric semis on US roads right now is in the low 100s and the growth of that number is very slow. Not because of lack of interest but lack of availability. The current version of Telsa semi might be able to directly replace 10% of trucks right now without a loss of efficiency. That's a lot of Trucks but still a small portion of the capabilities ultimately needed. Right now range is a problem, charge time is a problem, weight is a problem (if your truck is heavier you haul less weight in the trailer - assuming your hauling something heavy and not amazon boxes), etc. These will hopefully all be solved overtime but not on the timeline CA had.