Head Games!

Because people can walk beside the car?
Walking 4mph is a 15 minute mile. you gotta chug along pretty good at that rate.
3.6mph is a mile in 16.7 minutes, easily doable for a younger person. In my 40s I was still easily walking 4 mph. I haven't tried it for a few years now.

I put my trust in the HV pump, the oilmods, and the oil itself.
Since the last freshening in about 2005 or 6, the engine has not been apart.
I would guess my cam is therefore
Not,
remotely aggressive.