Alan we moved to Torquay in 2004 then returned to Cornwall in 2009. I seem to remember the 85 direct to Exeter stopped in 2009. We used it a few times as it was far cheaper than using the car also far less hastle.Nick, the 85 was an Exeter to Crediton route, which ran in conjunction with Exeter Corporation. when it existed.
Stagecoach Devon route 85 operates in North Devon now.
The original DG routes, Torquay to Exeter, from memory were 1, which went via Newton Abbot and Chudleigh and 2 which went via Teignmouth and Dawlish. However, even with car usage Stagecoach have managed to redevelop much of their routes.
I have to admit that owning a car since 1957 I have rarely used buses.