Also worth looking at is the Citroen Picasso..... I use the missus one for gigs..... you can take all the seats out... so it's as big a a small van. I get all the PA (2 x 18" subs + 2 x 1 x 15" tops), cabling, lighting, Mixer, monitors plus all my bass rig and there is still room left.
.... Just seen someone posted this earlier....