Your biggest issue is going to be water getting out of the bowl from bumps in the road and turns. If you can solve that issue, rigging up an upside down bottle with a hose coming out of it into the bottom of the bowl shouldn't be a problem.
:lol:Your gonna turn your dog into a Gerbil!:lol:I was thinking more on the lines of the bottles that attach to the sides of crates.
http://www.amazon.com/Lixit-Dog-Waterer-2-gallon/dp/B0002Z15UM
Is there a way to rig this inside an E?
I have seen some mighty big gerbils riding around in Kia's, you never know. ;-)I don't think my 85 lb German Shepherd could ever be mistaken for a gerbil, whether she's drinking out of a watering container or not![]()