Who is guilty of doing this? Is this a bad idea?

legalboxers
https://www.cnet.com/roadshow/news/overfilling-gas-tank-topping-off-dangers/

The temptation to keep clicking the gas station pump is strong, but it's probably not worth it. The potential damage to your car, your shoes and the environment are significant.

Here's why "topping off" is probably best avoided:

You might damage your car: All US market cars sold since 1971 have a closed circuit system to trap and later burn the fumes from their gas tanks. A complex array of charcoal canisters, tubes, valves and sensors comprise a system designed to handle gasoline vapors only, not liquid fuel. Jamming too much fuel into it repeatedly can result in a Check Engine state that will keep your car from passing an emissions test and could cost hundreds of dollars or more to repair.
Who is guilty of doing this? Is this a bad idea?
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