I was the one who told you to try Boolean, but I did a lousy job of it so I'll try again, because this is a useful technique for making roads, rivers, etc. Hope this makes things clearer. By the way, your final solution for the driveway looks great, don't change it!

This is not my "second childhood". I'm not finished with the first one yet.

Time flies like an arrow; fruit flies like a banana.

"I'd like to die peacefully in my sleep like my grandfather....not screaming in terror like the passengers on his bus." - Jack Handy