My MacGyver solution in the past (and now the future), is to buy one of 2 kinds of leash:
1) First choice is to get one that has a clip on each end. I clip one end to the baby seat anchor (top or bottom of the car seat would determine the length of the leash) - the other end to the dogs harness. I have also made custom length leashes depending on the current size of my dogs, or type of vehicle I had.
2) Failing to find the right size, and feeling too lazy to make a 2 clip leash, I have purchased a 4' leash and looped in multiple times through the baby seat anchor until it was the right length to keep the pooch in the desired area. Of course, I never removed the car leash - just left it in there.
Side note to leaving a leash in the car... Here in AZ, if left in the car during our 11 months of summer, the metal clip end of a leash
WILL turn into an impromptu branding iron!!! Find something that you can slip onto the leash, so that after you clip it to your pooches harness/collar, it slides down over the metal to cover it and keep your dog from getting burned. In the past I have used wool baby socks with the toe end cut off.
Anyway, just my
