Variety.com reports;
Variety.com wrote:Ronald Gans, actor and voiceover performer for shows including TV's "Welcome to Pooh Corner," died June 29 in Los Angeles from complications of pneumonia. He was 79.
Gans, sometimes credited as Ron Kennedy, was the voice of Kanga and Roo on "Pooh Corner." He also gave voice to Sebastian the alley cat in the Disney Channel's "Dumbo's Circus" and Drag Strip on the "Transformers" TV cartoon.
With his deep, booming tone, he voiced hundreds of trailers, TV promos and radio ads during his nearly 50-year career. Screen appearances include roles in "Perry Mason," "Lost in Space," and several Roger Corman films.
His IMBD profile can be seen here.
Drag Strip is probably racing over dead Autobot chassis in the sky. 
i hate seeing g1 voices pass away
79, a long road. Thank you, Mister Gans.