Depends if you want to share the space with the bees, or not.
I use a Ford Galaxy for most things, with the seats down in the back you can get a huge amount of stuff in there. Its a real workhorse of a car, seats 7 and very reliable.
If you don't want to have the bees in the same space as you, I'd recommend the Mitsubushi L200. HWMBO has one with a double cab. It has enough room in the front to seat 5 people in comfort and has a lockable cab on the back where I can put hives. 4WD and high ground clearance mean there's no problems with muddy fields or intimidating others from car parking spaces. We've now had two, the old one had the turning circle of a tank, our current version is much improved!