Audi Q7 TDI

On June 21, CNET News reporter Daniel Terdiman will start Road Trip 2009, his annual journey through one region of the United States in search of the most interesting destinations to write about and photograph. This year's trip will take him through six states (Colorado, Utah, Idaho, Montana, South Dakota, and Wyoming) and will focus on three major themes: military and defense, energy research, and natural wonders.

But no road trip would be complete without a vehicle, and this year, Terdiman will be driving in and road-testing an Audi Q7 TDI. A so-called clean diesel vehicle, the Q7 is designed to be fuel efficient and low-emissions. But it also has a plethora of high-tech capabilities built into it, not least of which is iPod integration and Bluetooth hands-free phone integration.