- Genius Bonus: Derek's overheating was an issue with his basis, the British Rail Class 17 diesel. The problem was never fixed, and all 117 members of the class were withdrawn from service by 1971, with all but one scrapped.
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Thomas And Friends S 5 E 12 Double Teething Troubles
aka: Thomas The Tank Engine S 5 E 12 Double Teething Troubles
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