Looking to create a new vehicle class

I am going to start production on a Battletech Universe game. For all of you that know battletech there are mechs and what I would like to do is to create mechs that you can go in and out of just like a vehicle but all that I have seen are models that use the player as the mech so I am just wondering if it is posible to create a vehicle class where you can jump into and out of mechs that are just like players with moving arms and legs and also have weapons on them?