Toyota sells the Tundra in just about any configuration you'd like to buy--Regular, Double Cab, and CrewMax cabs, available in three different bed lengths--and each and every variation is about as big as any full-size quarter-ton truck on the planet.
The Regular Cab is the workhorse of the bunch, with just a bench or a pair of buckets in front. It's most often ordered in Work Truck trim, without carpeting and with grey vinyl seats. Still, it offers plenty of room in the bed out back--and even behind the seats, where there's a few cubic feet of storage space.
The Double Cab is way more popular, since it's capable of occasional people-hauling in its flip-up rear seats. Its rear-hinged access panels aren't true rear doors, but it's easy enough to usher the kids into the space, or to fold up the seat bottoms for a nicely sized, behind-locked-doors cargo hold. Those seats aren't all that comfortable for longer trips or for anyone past puberty, though, and leg room is only barely adequate.
The CrewMax? It's essentially a roomy sport-utility vehicle with a pickup bed stitched on its rear end. It has four full-size, front-hinged doors that reveal the kind of interior space that makes it useful for full-size families hauling ATVs away for a weekend ride, or for a contractor bringing his own crew to the work site. On this version, the rear seats slide and recline for ultimate comfort, leaving plenty of leg and knee room for all passengers. Add a sunroof on any version, though, and the high-riding chairs will mean tall passengers come into contact with the headliner.
The utilitarian interior of the Tundra wears some iffy plastics. It's not a beautiful place to work, by any means, but goodness it's huge: there's a vast center console deep enough for a laptop or hanging files, wedged in between bucket seats wide enough for any size passenger. Go without the console and the Tundra's front bench truly will carry three grown adults across. All the controls are big, too, designed to be operated with a work-gloved hand, and there's a telescoping steering wheel with a long range of adjustment. Still, some of the controls are mounted so high on the wide dash, they can be difficult to reach for shorter drivers.
In all Tundras, the lack of wind noise and the refinement of the powertrain are a step ahead of every other full-size, light-duty pickup truck on the market.