If you are stuck in an office during the day, some things I have done to keep myself from gaining weight is to try and take a walk everyday at lunch. Also, most restaurants will provide calories and other health information to their food either at the restaurant or on their web site. That way you can see what is available within walking distance of your work and plan a meal accordingly. Lots of place have healthier options if you look, there really is no reason to fall back on the old fast food wagon.
New Car: 2008 335xi Coupe
Earlier Car: 2004 STi (got stolen)
Earlier Earlier Car: 1995 Mustang GT (416 whp and a blown engine)
Really Much Earlier Car: 1988 Mazda 626 TURBO