Originally Posted by Boxster1971
Today on the road in central Minnesota I saw a Winnebago Sprinter ERA towing a small Jeep with a canoe on top and bikes on a rack behind the Jeep. Just a version on your drawing.
Interstates have no problem at all pulling a toad, as long as you keep the toad's weight below 5000 pounds GVWR and have supplemental brakes on the toad. I've got almost 26,000 miles on my Interstate, and over 13,000 of those miles are pulling a toad. I've crossed the Continental Divide pulling my toad, and even at 7380 feet elevation (the crest of US 550 in New Mexico) I was still getting 16mpg towing my car. At lower elevations I can get up to 19mpg while towing, though 17.5-18 is more common. My toad has a GVWR of 3500 pounds.
If you're towing a Jeep, you'd need a few inches of rise on your hitch to keep the towbar level because a Jeep's bumper is higher than a Sprinter's bumper. But that's the only complication that I see to towing a Jeep.