For me, a small 5.5oz can or two of spicy V8 was well worth the extra weight on backpacking trips. The main problem was they were small cans and most of the weight is in the can and water.
I decided to try to dehydrate V8 after getting a new dehydrator.
2 cups of V8 will fit in my solid fruit roll-up tray insert.
Once the V8 has dried to a scab-like consistency (yes, I know there are some better descriptive terms) place in a zip-lock bag and freeze overnight.
Once frozen the dried V8 will grind in a coffee grinder or a small chopper. A large bottle of V8 will turn into about two fingers worth of powder that reconstitutes very nicely, tastes wonderful with vodka and is also great for adding flavor to most camping meal. Its also a good thickener and flavor enhancement for soups.
Now, if I can figure out how to dehydrate Guinness.