Complex sentence: The first car, 3014, was delivered on September 6,2016, and the other cars of the first test train, numbered 3010-3019, will arrive by the middle of September 2016.
Split into simpler sentences: The first car, 3014, was delivered on September 6,2016. All ten cars of the first test train, which will be numbered 3010-3019, will all arrive by the middle of September 2016.