Yes, just keep the bike for as long as you want!
Extended rental will be automatically activated when your trip exceeds the included 60 minutes.
With extended rental you can have the bike for 6 hours, in addition to the included 60 minutes. After 60 minutes it costs 15 NOK per 15 minutes.
Does the money get drawn from my account automatically?
Yes, your registered payment card will be charged whe you park your bike, and you will receive the receipt to your email address. You will always have a good overview over how long you have been out for a ride and when extend rental starts in the app.