Intermittent symptoms: Check engine light, BAS ESP light, ZERO throttle response.

2 independent mechanics have said that they are unable to reproduce the problem. Said the car runs like a champ for them. Except I don't think they really understand how she feels to drive when she's actually running right. Supposedly all trouble codes were unrelated and addressed. I've already spent a ton of money.

When this weirdness happens, as it did again this morning on my way to work, I can put my foot to the floor and count 3 alligators with no increase in speed. At all. Even when this weirdness doesn't seem to be happening, the car still lacks the crisp response I'm used to. I'm driving like a little old lady because I have no confidence in my acceleration to maneuver in traffic.

I'm willing to put the car in the shop one more time and then I'm giving up on her because she's just no fun anymore. 103k on the clock and meticulously maintained. Please tell me what to have them check and in what order. I want my little rocket back.