Scion t2B concept

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All three vehicles are designed to be built from the Avensis platform that also spawned the Scion tC coupe.

 The t2B concept gives broad hints at a potential successor to the xB, but Toyota spokesman Mike Michels cautioned that the vehicles are merely "exploratory."

"It's not to be interpreted as the next xB, but as a number of possible directions for Scion to go," Michels said.

The t2B -- which stands for "Tall Two-Box" -- uses the same 2.4-liter four-cylinder engine as the tC and Toyota Camry.

Scion designed two different door concepts on the t2B. For rear-seat access, the driver's side has remote-controlled doors hinged at the rear, while the passenger's side has one large power-sliding door. Neither side of the car has traditional B-pillars.

The t2B has a massive rear window that doubles as a projection screen for movies or video games.

Scion designers made the headliner the widest area inside the car. The extra headroom gives an ambiance similar to a lounge hangout for the t2B's four occupants.

Scion also presented two other vehicles in one-quarter scale model form. The "Cargo" is a two-seater mini-truck with a small bed for messy gear. The Fastback takes a more aggressive approach to the t2B with a steeply raked rear hatch.