Complex sentence: Under Pilain's leadership, the first Vermorel prototype was ready to be exhibited in March 1899 at the, and a few Vermorel cars had been developed and constructed by August 1901.
Split into simpler sentences: Under Pilain's leadership, the first Vermorel prototype was ready to be exhibited in March 1899 at the. A few more Vermorel cars had been developed and constructed by August 1901.