An automotive vehicle having a power-actuated ramp includes a vehicle body having a roof, front portion, rear portion, opposed side portions, and a floor that cooperate to define a passenger area. At least one door provides boarding and alighting relative to the passenger area, which defines a flat area of the floor adapted to receive a mobility device. A ramp cartridge is operatively supported by and received within a recessed section of the floor and includes a frame assembly having a main deck and cooperating with and being substantially coplanar with the flat area to provide a substantial flatness of the floor, a ramp assembly having a ramp that is adapted to be retained in a stored position below the main deck, and a drive assembly adapted to actuate the ramp between the stored position and a first ramp position and between the stored position and a second ramp position.