Complex sentence: The company continued promoting the Kilowatt in 1961 with hopes of securing enough prepaid orders to finish the remaining chassis components that had already been built few, if any, were sold in this manner.
Split into simpler sentences: The company continued promoting the Kilowatt in 1961 with hopes of securing enough prepaid orders to finish the remaining chassis components that had already been built. Few, if any, were sold in this manner.