This is not the car telling you where you can or cannot go imperatively. This is the car sharing dynamic information to you about where you could go before you are stuck in the middle of nowhere, just like you would get stuck with non-intelligent ones but without the empty tank warning @60miles from a gas statio. It won't prevent you from doing the stupid thing itself, it will let you know how stupid it is to do it, before you even have the chance of starting it.
Don't be a glass half-empty type of person: the original topic was about "people being anxious about having enough juice to go somewhere", not "ways I can rage about how an intelligent car performing tasks you liked to predict mentally with a non-intelligent one and how hipster that was and how lazy people are becoming" ^_^.
Todo lists, like Todoist might also work.
Hundreds of todo apps turned up with the smartphone wave, but I believe that's the one that best integrates across platforms (Web, Mobile, and even some specific OS apps and MS/Open Source Office suites. Oh and the cloud, I think there's a Gmail plugin too). The main benefit of Todoist though is, like Trello, that they are very easy to get into, but can evolve if you need the added complexity.
See it like this: you can simplify a code-centric issue tracker like JIRA or Redmine to non-code tasks much like you can evolve Todoist or Trello into coding trackers (i.e. like with KANBAN). But I think Trello eventually leans to be more of a code tool while Todoist seems like a Swiss Army of task-oriented needs, i.e. more generic.
All seems condemned in the long run to approximate a state akin to Gaussian noise. -- James Martin