Don't worry about it.
I haven't heard of any spate of shootings on the Interstate Highway System, of late. Especially, overall, on the route you'll be taking. I live in the Baltimore region, and my concern about getting shot on I-95 is akin to my concern about a fuel tanker exploding next to me in the Fort McHenry Tunnel...zero.
If I ever needed to, I'd carry, in Sandtown-Winchester or Harlem Park, etc. But I don't.
Never understood why some folks want to carry ALL THE TIME; I've read comments from those who strap it on when they get out of bed, just walking around the house...I hope I'm never that kind of a 'prisoner' in my own home.
Just sayin'...