Honestly, the biggest fault of Google Maps is that I can't find something "along the way" to something, just nearby. I'd be much happier if I could specify "TGIF's on the way to Alice's house" or "Gas stations along the way to Las Vegas near the halfway point."

I can't get too mad at it, since I can just zoom out and it'll search from the center of the map - but it's not very effective if the distances are long or if I'm using the text interface.