If you're not driving a hybrid, you can still make a positive difference to the environment. How you drive and how well you maintain your vehicle can all help.

Here are three great tips for reducing emissions from your car and increasing fuel economy and efficiency:

1. Obey the speed limit: Your fuel economy is lowered by about 10 percent when you drive 75 mph instead of 65 mph. Driving over the speed limit can also increase tailpipe pollution in many vehicles.
2. Unload: Even 100 pounds of extra weight in your car can reduce fuel economy by 1 percent. Take a minute to unload your trunk or back seat.
3. Combine trips. Once your engine and catalysts are warmed up, they create much less pollution.

For more on how to green your car, go to Greener Cars