You are heading North on I-10 in Phoenix (okay legally you were west bound but the freeway runs North / South in this area.)
We are southbound in a tiny prius (we are low to the ground and can't see over the concrete Barrier very well. We saw a mostly white Bird 30+ feet pulled by a white truck possibly 4 door... Rear living room on the bird...
Exit 219 (North side of Phoenix up by Happy Valley exit) at 2:20 pm.... Wednesday 09/14/2011.
Hope you have a great journey!