Hello fellow Rubi-cruisers, while admiring under the hood of the Rubi, I noticed that there is an extra space on the driver side close to the firewall. exactly where the battery would be if it was on the driver's side. It has a small plate with pre drilled and pre threaded holes. almost like if something was missing there. So, Am I missing something? Or is this just extra space? maybe for like a dual battery set up?. I would like to bolt on a Small air/water tight tool box there. Just for a few screw drivers and my tow straps. Any thoughts?