How do you minimise fuelconsumption while driving on congested roads ?

First off, I just want to clear any thoughts about a new car from your head. Unless you drive a big gas guzzler. Its not the car you drive, its how you drive. To answer your question, my first thought is coast. Always look ahead down the road. If you see brakes a few cars up, there's no reason to gas it. Just coast up. Even if the guy in his raised 95 ranger behind you is flipping out, hell get there the at the same time, just using a lot less gas. Avoid taking it out of gear. not good for the car. Also, when i accelerate from a light, i try to keep the RPMs under 2k. Its helped substantially increase my mileage. My cheapy caliber is rated at 26 city and 30 highway, and ive been achieving over 34 mpg city since gas hit 4 bucks.