Frankie_B: No, sorry, not implying that at all. The deceleration on landing, especially if you're under pressure to get off the runway ASAP is perfectly understandable, and is probably of the same order as a bus emergency stop. I've been standing in the latter case, and wouldn't want to be in the former case.
What I was trying to get at is that in abnormal situations, SLF inertia is similar in both cases. We do our best to prevent air passengers from putting themselves in that position, but have bus systems in place which effectively force passengers into the same situation. Ironically enough, it's often on the bus from gate to aircraft.