[xurbanx]

It's an open question, there is no yes or no answer to this.
Numerous times I've driven on the Monash at the speed limit (80 due to roadworks) and I'll get people tailgating me. 10km under on a Fiesta, on the freeway is a major difference, heck even on suburban roads it's slow.

Point is, it depends on the situation. One a multi-lane freeway, perhaps 10km over would be better. 10km under on a small capacity car means people get backed up, angry drivers tailgating them causing anxiety, anger, nervousness for the "offending" driver.

What I don't get is impatient drivers barreling past you at speeds above the limit. Should've just left home early if they didn't want to get stuck behind someone slow.