/ Source: Dateline NBC
- See the official HFAC test results
- Recent court decision in case of FTC and Dennis Lee
- Receipt for installation, purchase of HFAC device
- Customer instruction sheet that comes with device
- Press release from mechanic Sam Burlum
- Go to Eric Krieg's Web site
- EPA's tests on gas-saving devices
- Read a statement from the EPA to Dateline
- Popular Mechanics: Why water won't improve MPG
- fueleconomy.gov
- Watch web-exclusive clips from this story