2001 Ford Focus Shudders, Stalls, Dies

The other day, I was driving on the highway when my car would sort of give. It wouldn't accelerate, and started to decelerate. We pulled off the highway as it shuddered, and soon died at an idle. The car turned back on, we heard a sort of marble-sound in the engine, and we drove it a little while (about 2 min.) Before it gave out on us again, and died in idle. We pulled to side. It recently has been shipped across America on a truck. Could this have caused anything? From sitting for a week? Also, the air conditioner was just replaced about two months earlier. It has a recent tune-up, and the fuel filter has just been replaced by the mechanics. The car registers no computer signal, but continues to eventually give/ eventually die (especially at high speeds or after driven at high speeds). Please help.