Something I remember my driving instructor telling me all those years ago was that mounting the kerb was a big no-no during a driving test. It would result in instant failure.
It sticks in my mind, particularly when I see something like this:
This was the second attempt at parking for this guy. I watched as he reversed in once, mounted the kerb, drove back out, tried again, mounted it again, then gave up and walked away.
Bzzzt! Instant failure!