A man was found slumped over a steering wheel on a deserted highway. His car had run out of gas. The driver's side window was rolled down completely, yet the man died of carbon monoxide poisoning. How could this happen?
The exhaust pipe was blocked and leaked into the cabin
Snow or debris blocked the exhaust pipe, forcing toxic carbon monoxide fumes to back up through the vehicle's heating vents into the cabin faster than the open window could ventilate them.
About this riddle
Detective riddles are tiny mysteries. Look for the detail in the story that does not fit; it is usually the clue that solves the case.
Difficulty: Hard. More like this: Detective riddles with answers or try Truth & Lie Island for a different kind of puzzle.
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