In the second half of September, I am travelling from Kerlingarfjöll (Iceland) back to civilisation. Two taxi companies have quoted a price of ISK 125000 (€1052) by road and €1650 by air respectively, so I have decided it's cheaper to hitch-hike even if it means missing my flight and having to book a new last-minute flight to the UK (I have also considered the costs of car rental or of bringing a bike, which all (far) exceed the likely cost of missing a flight).
How many cars pass per day over Kjölur Route F35? I'd be hitch-hiking from here.
Walking to the nearest bus-stop is around 90 km so should be 3 days.