> going 90 in 120 region of highway without any reason, presumably saving last bits of battery (that has at least some rationale, if they do it due to ie fear then they should not be driving or having license).

Was very concerned until I realized you were talking about kilometers and not miles.

Otherwise, I'd hope the average driver would firce themselves to drive slower than 120mph out of some sense of fear, or at least a sense of self-preservation.

Miles are bigger than kilometers so the guy doing 90 among traffic that wants to go 120 might actually be worse in miles because it's a larger speed differential.