On a day when the wind chill was -47F we find CB&CNS C630 2035 leading the eastbound train on the Goderich and Exeter. About 2 hours from now 2035 would stall and it's air starter would 'blow' resulting in only the last unit, an ex-BN GP40 to pull the train into Stratford, Ontario. 2035 would never be repaired after this failure.