Trailer is older but has less than 7 seasons of use on it. Trailer is FRP(hail resistant), not aluminum. The Upper Deck spans the entire length of the trailer so it should hold 4 racecars (like modifieds) or easily 3 longer cars. The Upper Deck is a durable treadplate with an open design for easy tie down and working on car. Built in Tie Down D-rings. Very nice Cabinets, two stainless steel workbenches, built in roller bearing tool box. Huge amount of cabinet and closets space. Tire Racks and lots of E-track. 7000 Watt Onan Generator with gas tank and batteries with a large access door. Remote Start for generator inside trailer. Trailer is outfitted with 12V and 110 power. Runs off Generator or 30 amp shore plug. Workbench lighting. Central A/C and Heat with ducts running the length of trailer. Internal Electric over Hydraulic lift is American made with treadplate runners with tie down rings for car for traveling on lift. 1500 lb superwinch at doorway to raise ramp door. Comes with two style hitches so you can use with Gooseneck ball or Semi 5th wheel pin. Equalizer Tech Leveling Electric Hydraulic motor for raising and lowering trailer feet for leveling or connecting to rig. Three 12,000 lb Dexter axles and has been converted to Semi 6000lb rated 17.5 tires, studs, heavy duty wheels. All 6 hub bearings were removed and inspected 7,000 miles ago. All 6 electric brakes operational. Hubs are sealed Never Lube bearings.