In one year the average car puts over 5 tons of carbon dioxide into the air.
(Source: conservationfund.org.)

Carter Subaru, Carter Volkswagon and Carter Saab are helping offset their carbon footprint.

How?

With a tree!

For every person who test drives a car at one of their Seattle locations, Carter Motors will make a donation to plant a tree in the Mountains to Sound Greenway along I-90 in Washington State. For each car purchase, Carter will fund the planting of three additional trees.
 

 
Mountains to Sound Greenway Trust volunteers and field crews will plant and care for the trees in public forests in the 100-mile Greenway corridor.