I Forgot to Hit End Until I Drove Away
It happens to the best of us. You get into your car to drive home and you forget to stop Slopes. It's an easy fix though! First, hit the edit button.
Then towards the bottom you'll see the tools section. Tap the timeline editor to get started.
In the timeline editor you get full control over the recorded data. You can easily add, remove, or tweak any detected lift or run. So for example, tap a lift / run when you started to drive away and hit delete. You'll be prompted if you want to delete all lifts / runs after that point, and you can say yes. Hit done, and then save, and you're good to go!