No such rule in WRC for more than five years. Even before it was 130.
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Maximum average speed rule has been long gone. And wasn't it 130 km/h when it were in regulations? Now each stage gets a go when its safety standards are cleared by FIA.
Sure Rally Finland organizers have thought about this for well over a year now. New cars still doesn't rule out using normal stages. Maybe new stages are looked up from smaller roads, but I don't expect any major changes. Some spectator safety issues have already been addressed in previous years, like moving spectators zones in open areas a bit further as average speeds have got higher already a year after year. Outside spectator zones you should have the freedom as per usual.
Hyundai video
https://youtu.be/gwyGvSPtgJ8?t=1