Caught the eclipse in Monson, Maine after deciding the longer drive (without traffic) would be better with fewer clouds (none) and probably less traffic. Especially once we saw Franconia backed up before dawn. Zero traffic up the Turnpike and past Waterville; saw some exiting traffic in Newport so got off onto 152 near Pittsburgh. No traffic to Guilford, then I made a mistake of listening to my dad telling me to get onto a back road instead of Route 6 because Google Maps said to. The issue was that it was "junior" to Route 6 in the merge in Monson, and backed up a mile. No cell service, so Google didn't expect or detect the traffic, so kept pushing people that way. We were well into totality and it eventually stopped in Monson, a few miles shy of meeting friends who had flown to Greenville.
The event was spectacular watching across a snowcovered lake. Surrounded by white snow I took my sunglasses off before totality; didn't need them.
I had spotted the car so we were the first ones out of town. The Monson traffic had been a blessing in disguise, as we would have been stuck in Greenville for an hour. From Abbott, we did an end-around of Guilford to avoid that bottleneck, west on 16 and south on 151. Amazing to go through towns with 50 people and see people at every turnout and every clearing. That was a good choice, although 151 had a 20 minute backup into Athens since, again, it was "junior" to the other road. I had originally plotted a route onto a road which would be out of the way by 2 miles but avoid the merge. It would have been faster, but wasn't a dealbreaker. A bit of traffic crossing Kennebec in Hinckley and then freeflow to Portland for dinner.
Drive time under 5 hours each way from Boston. Route planning almost as exciting as the event itself!