Different memory types resides in different parts of the brain. Driving is a classic example - when you first start, you're trying to keep it all in your mind at once, and it's living mostly in your short term / working memory, which tends to be in your frontal lobe (bit above your eyes). The more you use a physical skill, the more it gets into your "muscle memory" and this is in effect transferring to the cerebellum, the small plum-like 'add-on' at the base of the brain (below the knobbly bit at the back of the skull). It's quite common for memory damage to spare things like 'muscle memory', partly because it lives somewhere else. Another curiosity is that vocabulary is resistant to damage - if the person can still speak (which in turn can be prevented by a huge variety of neural injury), you can get an idea of the level of their pre-event education by listening to the level of words they use.

Neurology is fascinatingly complex and we've really only scratched the surface of what we can learn about the brain. It is very unlikely that you would hear anyone that worked in neurology flat-out refute any combination of symptoms. I used to work in a seizure clinic and heard of a guy that had a seizure when he saw orange circles. No other colour circle or other shape orange, just specifically orange circles. This was confirmed through EEG testing. Never heard of another case like it, but you get unique things like this reasonably often in neurology.