Drove from Lewes Delaware to Salem New Hampshire yesterday. Pretty much ran the car normally except to accelerate away from the usual drivers texting while driving.
Ran Rt 1 to Rt.95 to New Jersey Turnpike. Got rerouted ((Waze directions) from the GW bridge into New York City(Lincoln Tunnel) to Merritt Parkway to Rt 91 to 84 East to usually 90. Got rerouted back roads to 290 to 495 to 93 North to New Hampshire. 10 hours. Left at 7 AM. I thought I would get a good shot at open road mileage...

2021 GT Convertible Gas Mileage