Hey Charles Firth.........
Being a "Snowbirder" and travelling Interstates a lot, don't let I-95 worry you.
We travel with car in tow, and I set the cruise for 62MPH (100KMH). It's the sweet spot on the tachometer for best mileage, and the best spot for acceleration performance if needed to get around "Bert & Ethel"
Although interstate speeds may be posted higher than 60 and even as high as 75, (remember that's the MAXIMUM POSTED SPEED) when I travel in the right hand lane, it doesn't really matter to me how fast others travel past me in the left lane.....my lane in front of me is what's important and it's clear. By the time they pull back into my lane, their higher speed has them way out front in MY LANE!! Don't even have to adjust my speed.
Sit back, relax, and enjoy the ride!!!!!!!!!!