sentences:  Early flat-plane V8 engines included the 1910 De Dion-Bouton engine, the 1915 Peerless engine, and the 1915 engine.The first known V8 engine was the Antoinette engine, designed by Léon Levavasseur, which was first built in 1904.The Antoinette was built in France for use in speedboat racing and airplanes.