...why is doing the posted speed limit such a bad thing?
It ain't, but this ain't no Corvette forum.
Most of us have mod'd our vehicles or are traveling near or at (or exceeding) GVWR and have horribly underpowered and under-efficient engines
from the factory and in most cases are not paid at all and drive many thousands of miles more than your average joe for everything and for every year. Each speed increment costs us real money in fuel (we get not a whole lot better mileage than the long haul trucks) but yet we get no more vacation than the average joe and can't afford the time of a 4k mile roadtrip for vacation on the side roads--which consequently we would love to do but have limited time and money to so do.
DrMoab said:
If [you] kids had any clue how hard it was to avoid rear ending people when they fly up on your left, cut you off, slam on the brakes and exit the freeway, among so many other stupid things people do.
See, few if any of us on this forum would ever possibly have that ability! Driving a 6800 lbs vehicle with about 100hp max does not get you passing anyone just to be able to exit.
Edit, actually and via calculation, going 65mph at GVWR in my Troopy yields 135hp which
just meets the engine rating from Toyota brand-new.