Originally Posted by
chephy
I think the part of the brain that's making the routine on-road decisions (checking for obstructions, adjusting speed and position as necessary etc.) doesn't care if you're in a car or on a bike - it just kinda does what it's used to doing.
Yes, the brain does develop mental habits, but they are usually triggered by the context/environment. Being on the road on a bike and being on the road in a car are completely different contexts for me, so my biking habits are suppressed and a whole new "oh crap I'm huge and fast" frame of mind starts.