My name is Gimmy!

I am looking to rehome my 2yo Border Collie mix named Gimmy. He is neutered, UTD with vax, microchipped, housebroken and crate trained. He also gets along with pretty much every dog he's ever met.

I'm rehoming him bc he is an escape artist. He constantly digs my fence line and runs around. I live near a very busy road so I am scared he will get hit by a car. I've lined my fence line with barriers and cinderblocks, but he keeps finding a way and I just don't know what to do anymore. I work a full time job and go to school full time, so I normally let my pups hang out in the yard and they have all been really good up until about two months ago. Gimmy and my other dog, Elly, have just kept getting out everytime they're in the yard. My other dogs do not ever follow them. So I've decided to try and find him a home with someone who can keep a better eye on him or someone who has experience with escape artists.