I use when needed depending on the size of the show I will be carrying:
Full Sized GMC 3/4 ton van: I am able to get a pair of 215's, two pair of 115's, six 118 subs along with all the amps needed to run it and full lighting package with proper packing. But it is packed tight!
Chevy Astro mini van: a pair of 118 subs a pair of full sized 115's, amp boxes and assorted other items needed to run a show along with a few lights!
Honda Pilot: easily holds, single 118 sub, four of 10" or a pair of 12" mains, Amp box, Player system or Karaoke system plus a few lights and speaker/mic stands.
Honda Element: everything the Pilot can carry plus some, loading and unloading seems to be easier in the Element!
Cadillac Escalade: everything the Element can carry, but uses more gas!
Cadilac Deville: we don't use this to carry gear to shows but if push came to shove the trunk could carry a small show system to include a pair of 10" mains and a pair of 112" sub cabs.
If the need arrises (school shows, large outdoor events we have an 6x8 trailer that pulls behind the full sized van.