My wife mentioned this problem to me but thought it was because we were running low on gas. I figured I wouldn't worry about it until it happened again. Well, this morning, it happened again.
Vehicle parked overnight. Started it and drove about two minutes to first stop sign. No problems. About five minutes to the stop light. No problems. Starting back up after being parked at light for less than a minute, in quick succession, I get power, no power, power, no power... (sorta like what running out of gas feels like). I pulled off to the side and coasted to allow a couple of cars to pass, then hit the accelerator. It picked up speed fast and well. No problems until I had to slow down and make a turn and then it started again. This time less severe and not as long. Made it to work without further problem.
No check engine or other lights. Fuel pump? Fuel filter? Transmission? Ignition system?