Your favorite road trip car ?

My 68 Barracuda in it's current iteration, is a fine cruiser at 65@2240.
It was a lil finer at 65=1600/85=2100, but that was a different combo.
Except
for windnoise and lack of A/C;
But, those wing-vents work pretty good for my upper body, and the floor doors drive the air right up to where it needs to be. So, I don't miss the A/C so much.
But the wind noise at 85 with the windows down, is atrocious. Bring earplugs, 8 hours is a long day. Spring and Fall are better with the windows up. The most miles I've done in one day, is Winnipeg to Calgary, about 800/850 miles ...... but, I mightabin going a lil faster at times.
Just so you know, by the math;
65@1600 is same as 85@2100, 105@2600, 125@3100, just getting up into the torque. Double overdrive is pretty cool.
But I know, ya gotta love a car like this a lot, cuz honestly 85 for 6 hours is a stretch.
Several years ago I bought a 2014 Chevy Orlando frt driver CUV. It has a 2.5liter VVT, DI, 6-speed auto that cruises 65@2100. as well. Smooth, quiet, comfortable, A/C, cruise, pwr windows, and a nice-enough sound system. The miles just roll on effortlessly, and it gets a wee bit better fuel mileage at 65.....Which rapidly drops going any faster. By 75 she's sucking gas pretty bad, as the car is a total brick. As far as cruisers go, this one is about the best/second best we've ever been able to afford.
The other was a nearly new 2008 Buick called a LaCrosse in the Usa. 3800/4speed auto that was. Great fuel-mileage too. Nice car, until some middle-aged woman texting while driving, drove thru a stopsign without slowing down..... T-boning the car, with my wife at the wheel. The car was a total write-off. My wife shrugged it off. She's tough bird.