In reply to JLS:
> I'm surprised going up mountains on trials bikes (motorbikes) hasn't become a thing yet.
My understanding is that there's no legal right of access for motorized vehicles.
> Also, as these e-bike style mountain bikes become more popular, I fear it's only a matter of time before these are seen more frequently on the hills.
Most big hills require carrying the bike and as ebikes currently stand they're pretty much prohibitively heavy.