Hi Nor,
You make a good point that the rule "flying is safer than driving" is a general rule, referring to commercial flight and standard (non-professional) driving. "Cherry picking" is deliberately selecting data that supports a conclusion or belief while ignoring other data. So it would all depend on how the argument is phrased. For example:
Flying is safer than driving, so you are better off flying if safety is your primary concern.
This is fine—no fallacy. A general argument is being made and as a general argument, it makes sense. Unless the person was saying this is ALWAYS the case, then they would be guilty of the If the person were to justify this rule by citing examples that only supports the rule rather than research and data that supports the general rule, then yes, cherry picking. They arrived at the correct conclusion but in the wrong way. In other words, they were right for the wrong reason.
If someone were to say,
Well, what about driving across a small town in a charter bus versus flying through IRAQ in a small propeller plane painted as an American Flag?
Then I would say this person is either simply being ironic or, if they are serious, we would need to ask them what is their point. If the point is to show that there are exceptions to the general rule, then fine. If their point is that the general rule is flawed because there are exceptions, then they are simply wrong.