haulin a generator

45 days and 9000 miles last summer. Genny in back of suburban with no issues whatsoever.

Never a problem with my Honda in the back of my 4Runner or in the TT.

a good inverter generator, like a Honda or Yamaha, will have a vent cap that shuts off the tank.
unless you spill gas on the generator exterior, you won't get fumes, if it functions properly.
some SUV owners puts theirs in a big plastic tub with the lid on it.

I just fabbed up heavy bumper and 3 hitch crate. Been on there now past 5 years.

the guy I bought my last TT carried his in the outside storage compartment under the bed and I to this day do not smell any gas odors. just make sure to close off any gas portion of the gen set or run it dry.

We haul our Champion 2K in the back of the Excursion, never had any problems or worries. If there is a fuel odor, the Ex has the opening 1/4 windows to help vent. Always run gen with fuel shut off until it dies, and never any leakage. I'm sure it would smell more if carb not empty. Fuel cap is pretty air tight when in closed position, and never have had any actual fuel spillage.

I'm sure there will be all kinds of posts aboot NOT doing this for "safety" reasons coming up!! I would ask those folks (who own SUV's or only cars with a trunk0 just how they haul their fuel cans for their lawnmowers, etc, when fuel is needed!!!

Don't worry about it, just be sensible about it!!