Amerigon Climate Control Seat System Featured in General Motors Technology Presentation at SAE 2005 World Congress

Proprietary Heated/Cooled Seat System Highlighted as Technology for the Future in Cadillac STS Demonstration Vehicle at International Automotive Engineering Conference

DEARBORN, Mich., April 12 -- Amerigon Incorporated today announced that its proprietary Climate Control Seat(TM) (CCS(TM)) system was one of a select group of advanced technologies featured by General Motors during its opening day presentation at the SAE 2005 World Congress, an international automotive trade conference at Cobo Arena in Detroit that runs through April 14. The CCS system is among the innovations included in a specially equipped Cadillac STS SAE 100 Technology Integration Vehicle featured during the General Motors technology "wheel" presentation for the Society of Automotive Engineers (SAE) on Monday and currently on display for the remainder of the conference at the AVL Technology Theater in Cobo Hall.

The "wheel" presentation consists of a wheel stand display next to the Cadillac STS that describes the vehicle, its components and the various component technologies. A seven-minute video accompanies the presentation that consists of overall vehicle information, driving demonstrations and additional component technology demonstrations.

The CCS system is the only system on the automotive market today that provides seat occupants individually controlled, active heating and cooling for year-round comfort. The environmentally friendly system is integrated into a vehicle seat and operates through a self-contained and solid-state electronic heating and cooling system based on Amerigon's proprietary thermoelectric device technology.

"We are very proud that General Motors chose to highlight our CCS seat system as a technology for the future in its Cadillac STS demonstration vehicle, even though current models of that vehicle do not yet include CCS," said Amerigon Chief Executive Officer Daniel R. Coker. "The inclusion of Amerigon's CCS in General Motors' presentation underscores the fact that our system is the industry's leading heated and cooled seat system and a prime example of engineering innovation and expertise. We believe this type of recognition by a major automotive manufacturer at the most important automotive engineering conference in the world will help increase demand for CCS worldwide."

The Cadillac STS is a luxury sedan that hit dealer showrooms in late 2004 as the Cadillac Seville replacement. While not available on current production vehicles of this model, CCS is available on the Cadillac XLR roadster, Cadillac Escalade ESV and Cadillac DTS.

About the Climate Control Seat(TM) System

Amerigon's proprietary CCS system significantly enhances individual driver and passenger comfort in virtually all climatic conditions by providing cooling and heating to seat occupants, as desired, using a proprietary solid-state heat pump combined with an active, microprocessor-controlled temperature management system. Ambient air is drawn into the system from the cabin of the vehicle and, based on input from individual seat controls and from temperature sensors built into CCS, the system's advanced heat pump heats or cools the air. The heat pump is built around a highly efficient, solid-state thermoelectric device (TED) that rapidly converts electric current into the desired thermal effect (hot or cold).

About Amerigon

Amerigon designs, develops and markets its proprietary Climate Control Seat(TM) (CCS(TM)) products for sale to automotive and truck original equipment manufacturers (OEMs). CCS enhances individual driver and passenger comfort in virtually all climatic conditions by providing cooling and heating to seat occupants, as desired, through an active thermoelectric-based temperature management system. Amerigon's subsidiary, BSST, is developing products using its proprietary, high-efficiency thermoelectric devices (TED). It has development contracts with industry leading partners to expand the market for TED-based automotive and non-automotive products. Amerigon maintains sales and technical support centers in Los Angeles, Detroit, Japan, Germany and England.