Worth noting that the advertised max towing capacity for a 2018 Jeep Grand Cherokee Trackhawk is 3500lbs (see Jeep website). With a Uhaul trailer, empty weight is 2200lbs, and a 1979 Jeep Cherokee, 4300lbs curb, you’re at 6500lbs total. Risky business when exceeding the max towing capacity of a vehicle by almost 2xs.