I had a car that unlocked as soon as you walked near with the fob. I hated this feature, because you were never sure if the car (with your expensive laptop in the boot/trunk) was actually locked. I ended up giving the key to a family member and getting them to walk a distance away, so I could try the door handle and check it was actually locked.
My family have both a Chrysler and a Subaru that try to do this, but they can't always keep up. (Sometimes I walk too fast and pull on the handle before it unlocks the door.)
