@alexustas made this really nice rover many years ago, original thread here:https://forum.kerbalspaceprogram.com/index.php?/topic/85645-*     Exploration Rover System (ERS) ERS is a set of different parts to build a rover which includes: Command module with airlock which can store up to 4 kerbanauts Crew module , can store 4 kerbanauts Crew and Cargo module  (NEW) Airlock and Cargo module (NEW) Cargo module (NEW) Universal Storage