Acura previewed its on-again off-again supercar with the introduction of the 2012 NSX Concept at the North American International Auto Show in Detroit.

Built from lightweight materials, the model incorporates Acura's new Sport Hybrid SH-AWD (Super Handling All Wheel Drive) hybrid system. The company promises handling performance that will libve up to expectations.

Photo: Acura

A powerful next-generation VTEC V6 engine with direct injection will team up with a dual-clutch transmission and a built-in electric motor to deliver outstanding acceleration and fuel economy by supercar standards. AWD capabilities will come from the two-motor electric drive unit that can send power to the front wheels.

Acura also introduced the all-new ILX compact luxury sedan in Detroit. When it goes on sale this spring, buyers will have a choice of three different powertrains including a base 2.0L 4-cylinder engine; a high-performance 2.4L 4-cylinder engine mated to a 6-speed manual gearbox; and a 1.5L gasoline-electric hybrid powertrain.

Finally, the new2013 Acura RDX will be motivated by a 273 hp 3.5L V6. Both the new 6-speed automatic transmission and lighter all-wheel drive system will improve performance and efficiency.