Reddit reviews Unisolar 128 Watt Flexible Solar Panel PV Laminate - 24 volt with quick connect cables. 216 inch x 15.5 inches - Peel & Stick

I think this is super cool.

Spendy, but safer:

http://www.optimabatteries.com/en-us/shop/bluetop/bluetop-group-31-dual-purpose-deep-cycle-and-starting/

Maybe you could stick one of these on the top roof. I like how inconspicuous the rig looks. I'd only worry about peal-off in the wind.

http://www.amazon.com/Unisolar-Flexible-Solar-Panel-Laminate/dp/B006EP6MCU

I didn't see a battery disconnect (aka camper diode aka battery isolator) either (maybe you didn't mention it), but if you run down the rear battery, make sure it doesn't run down the car battery too, thus leaving you stranded. It allows you to recharge via the car battery too. Like a one way valve to protect the truck's battery from accidental discharge.

http://www.autozone.com/autozone/accessories/NOCO-5-x-4-5-x-3-5-in-90-Amp-high-performance-12-48-VDC-gray-battery-isolator/_/N-25wr?itemIdentifier=1333_0_0_

Absolutely. My favorite completely discreet as well as super easy to use/install are the flexible panels I talked about. They are awesome albeit they are long but they can pretty much replace shingles on your house for the most part.

https://www.amazon.com/Unisolar-Flexible-Solar-Panel-Laminate/dp/B006EP6MCU

This is what my friend got originally for his home in georgia and it worked great. In fact it's so hard to notice that when the power company came out to check out why his meter was going backwards sometimes(he had grid-tie) the meter inspector couldn't notice the panels and so just thought the meter was faulty and kept replacing it until he came by when my buddy was home and started talking about solar.

As for making things nice it's really all up to your imagination. Think about anywhere you want or have shade i/e car cover, awning, porch, garden, shed, etc... and just imagine putting up panels instead of regular stuff. It not only does what you wanted but now you're saving money by doing it.

Now tax write offs might not always be applicable for solar projects if you're DIY but a lot of them still are it just depends on which program you're applying for. As long as the products you're purchasing are inspected and the final project is inspected too i/e pay for an electrical inspector to come out and certify it, you should be absolutely good to go. The big things to look out for are fire hazards, wire gauges, pure sine wave if on-grid and synced to grid, and of course fire protection requirements. Just basically don't leave lots of bare wires and allowing water to spill all over it or fling matches all over it and you're good to go.

I designed this kit about 15yrs ago when I worked at Unisolar. (I am a little surprised there are still some available.) It was designed for RV's, but could be used for a tractor trailor.

They could be stick them on top of the trailor. From it you could probably power a small living space and maybe a small refrigerator which would save the cost of idling overnight. The advantage of this product is that it won't break if a rock hits it and don't have to worry about wind uplifting a glass panel.

128W is probably too small, but there are a few kits available !?!

http://www.amazon.com/Unisolar-Flexible-Solar-Panel-Laminate/dp/B006EP6MCU

You can go less than a $3 a watt using [this kit.] (http://www.amazon.com/Unisolar-Flexible-Solar-Panel-Laminate/dp/B006EP6MCU/ref=sr_1_4?s=lawn-garden&ie=UTF8&qid=1342927366&sr=1-4)
You're going to have a bit of challenge on a budget like that though. Batteries will be an additional expense but this is a good learning experience.