An example can drive this notion home
You definitely have the right idea but I would suggest that when we attempt to drive something home, it should perhaps be phrased more confidently or definitively, if that makes sense. Instead, consider this phrasing:
An example will drive this point home.
I don't like the use of the words "can" and "notion" in this expression because the purpose of the expression is to take something relatively concrete (a point, not a notion) and attempt to certify it, in some sense. Be direct with your words and guide the reader with your confidence.
You could even shorthand it depending on how you styled the rest of the text and if you're willing to be conversational with the reader.
An example will drive this home for us.