This is huge news. It could affect San Diego and Tijuana's economies in ways that only bio-tech and Maquiladoras have.
From my house to Mexico is about 10 miles but the return trip would take 2 to 3 hours just last month. In that same time, I could be in Los Angeles, 130 miles away.
Now, times have been cut from hours to minutes. A two-hour wait might now be 20 minutes. Or less.
That's like the difference between going into town on a horse or driving. It will be a huge boon to the region, increasing the flow of traffic in both directions.