Ephram's 1988 Lincoln Continental was used in season 1 as the car parked at the Abbott's house where the younger Bright and Colin played basketball in the yard.
Amy not only stole the prescription from Linda's pad, but since it went to a pharmacy Amy must have also forged Linda's signature.
Amy supposedly pocketed a bland prescription but yoga pants have no pockets.
It is not explained how Amy's SUV gets back from Wyoming.