Moski and I found out at the Phoenix race that having only one key is now neccessarily condusive to either one of us getting into our rig should the one with the key not be present...so I vowed to her that instead of just giving her the other key, which could get misplaced

, I'd put it into a key combo unit where anyone could get to it that has a combination to the box...
Here it is...
I got it at Home Depot, and although it was a bit pricey ($30), it will eliminate losing the keys, well...unless the unit itself gets "misplaced", but the keys are attached to the head unit which makes that much harder to do. In addition, it's got a "valet" function that will allow you to set a one-time access to the keys. I liked it so much, I got one for the house also.
Sean