Complex sentence: In late 2004, Lionel finally debuted a new steam locomotive--a highly-detailed 2-8-2 Mikado--utilizing all new tooling and issued under the American Flyer name, the first original American Flyer steam locomotive design since the late 1950s.
Split into simpler sentences: In late 2004, Lionel finally debuted a new steam locomotive--a highly-detailed, 2-8-2 Mikado. Utilizing all new tooling and issued under the American Flyer name, the Mike is the first original American Flyer steam locomotive design since the late 1950s.