Among the many truck-related announcements today, Toyota made headlines when it unveiled the all-new 2016 Tacoma at the Detroit Auto Show this afternoon. As we reported earlier, the new Tacoma will have two engine options for 2016 that include a 2.7-liter four-cylinder gasoline motor and a new 3.5-liter V6. But many have wondered whether Toyota would offer a diesel option, maybe something based on the overseas diesel that powers the Hilux.