10 Years revealing secrets because there is no excuse for secrecy in religion – w1997 June 1; Dan 2:47; Matt 10:26; Mark 4:22; Luke 12:2; Acts 4:19, 20.
Here (page 74) we learn the “swift beasts” (swaying furnaces) of Isaiah 66:20 “refer specifically to locomotives” but automobiles “are probably included in that expression.” Readers are told the Prophet Isaiah would be back on earth soon and they could ask him whether the automobiles and motor trucks are included in that expression or not.