In the several trips my wife and I have taken between East Bay and SoCal, it's been hard to maintain 80+ mph. Between interchanges, construction, slower drivers

In the several trips my wife and I have taken between East Bay and SoCal, it's been hard to maintain 80+ mph. Between interchanges, construction, slower drivers, trucks passing other trucks, and so on, we're lucky to hit an average of 70mph. On the flip side, cruising at 60+mph is totally doable, and while it is ~40+ minutes slower in theory, we only need to stop for gas once at lower speeds, which shaves off ~10-20 minutes. Also, fighting through traffic takes the same regardless, so it's usually better to adjust when we're driving than trying to drive faster.