AFS Trinity Power Corporation announced this week that it has upgraded its prototype for a high performance, high mileage green SUV with new technology to extend the vehicle's driving range.

The hybrid drivetrain system developer based in Washington state rolled out its prototype XH-150 SUV Extreme Hybrid last year at the North American International Auto Show in Detroit.

On Monday, the firm announced two advances that it says bring its 150 miles per gallon, full-size, plug-in hybrid electric SUVs, trucks and cars closer to commercial production.

AFS Trinity introduced two new driving modes, which are aimed at delivering fuel economy and performance, in upgraded prototypes the firm is calling XH-150S. The enhanced prototype is at the core of the company's drive to retool outmoded automaking facilities with help from Department of Energy funding.

In the first "all-electric" mode, the XH-150S burns no gas during the first 40 miles; the vehicle can accelerate from 0 to 60 miles in 11.5 seconds and reach 90 MPH in highway speed, the company said. In the second mode, the vehicle automatically switches to fuel-efficient gas hybrid operation when the batteries are 80 percent depleted.

Drivers can choose at any time to operate in the second mode, which delivers better pickup time — and consumes more fuel. The company reports 0 to 60 acceleration of 6.9 seconds and 35-65 MP, depending on whether the vehicle is in charge sustaining or depleting operation.

The XH-150S, which uses off-the-shelf lithium ion batteries, is expected to have a battery life of 150,000 miles in addition to slashing fuel consumption and CO2 release.

AFS Trinity also said it is applying for $2.5 billion of the $25 billion in U.S. Department of Energy green retooling funding.

The company wants to use the money to help transform one or more traditional auto factories destined for closure into facilities to make its 150 MPG Extreme Hybrids, a move that would also help the U.S. auto industry and its workers, the firm said. The goal is to retool a plant so that it can manufacture 100,000 to 150,000 XH-150s a year, according to the company.

AFS Trinity is partnering with Ricardo Inc. of Detroit in technology development. The two companies worked together to build the early XH-150 prototypes. The Detroit firm would conduct mass production engineering in the proposed retooling initiative, AFS Trinity said.