Bumpers and Buffers is a short magazine story.
Sir Topham Hatt skids his car on the ice and runs into a tree. Then, Lorry 1 comes along and skids on the ice too, which sends a brick from his load flying into the air, which lands on the Fat Controller's car and dents it. At the station, Oliver slides on some ice too and runs into some trucks but nothing is damaged because Oliver has buffers. This gives the Fat Controller an idea and he gets hold of a pair of buffers which he has stuck onto his car.