I always play spotify on my daily commute, which on a good day is 35 minutes but can stretch beyond an hour when it's busy.
It's on those longer commutes that I run into problems as most of my playlists are albums and as such rarely longer than an hour. I play from my phone over bluetooth in the car, so when the playlist ends it ends and I can't restart or select another as legally I'm not allowed to operate my mobile while driving.
Now my idea is to have an additional option with each playlist, allowing you to select which of your playlists it should play once that one finishes. Either choose something else or the same if you want to keep that playlist on repeat.
If you delete a playlist, the chaining for playlist that had that one as next playlist could default to self so it would repeat them.
This idea has been submitted more than 1 year ago but unfortunately hasn't gained enough kudos during that time (10 kudos/year). In order to keep an overview of the active ideas in the forum, this idea will be closed for now. Note that this does not mean the idea has been declined by Spotify.
Please feel free to re-post this idea if you still feel you want this implemented. With a little change in presentation, maybe this time it will gain the necessary support from the community.