Complex sentence: The 2005 RL car structure features extensive use of somewhat "exotic" materials for a car at this price point including aluminum alloy hood, front fenders, trunk lid and frame, front and rear subframes, suspension arms, front knuckles and bumper beams.
Split into simpler sentences: The 2005 RL car structure featured extensive use of somewhat "exotic" materials for a car at this price point. These included aluminum alloy in the hood, front fenders, trunk lid and frame, front and rear subframes, suspension arms, front knuckles and bumper beams.