I tow my Aliner Expedition (~2300 lb) with a Volvo S70 sedan, and while it is a capable enough TV for the job (190hp/199lbft light turbo 5 cylinder is able to just barely keep highway speeds up steep grades) I was hoping for better fuel economy. It gets 27-29mpg hwy on its own and only 17mpg while towing 60-65mph on flats. This jumps up to 23mpg when drafting a big rig. I suspect that a TV with a larger front profile might perform better since pups are so boxy, and ultimately it's a choice between the TV or the pup punching that hole through the air, and TVs tend to be smoother lines. It also struck me that the sedan shape is probably pretty inefficient since it leaves a lot of empty space between the vehicles. Has anybody experimented with adding on any kind of fairing to their rig? My understanding is that the main places to focus are 1) between the TV and the trailer, 2) under trailer skirts, and 3) in the rear of the trailer. For (3) I see that a product called airtabs exist, and truckers tend to have these rear fairings that look pretty simple to replicate DIY, just 4 flaps that fold into a roughly tapered shape. And (2) seems like a poor choice because it costs ground clearance But (1) seems particularly interesting since I suspect it would have the most impact on my particular rig. I got thinking how articulating busses have those accordion connectors, think I could do something like that between the back of my car and the front of my trailer? And yes, I know 17mpg isn't too bad in the grand scheme of things, but I was hoping that I could get to the 20-25 range by using a somewhat underpowered vehicle.