I've been using one of those steering wheel locking contraptions ("the Club") for many years. It is basically a large metal rod with twin hooks and a central lock. They're relatively hard to smash through and the idea is that it's enough to deter theft. Not sure, however, whether this is really neccessary on a modern car like the Honda Clarity and it is kind of a hassle to deal with. I would love to skip it if possible. On my previous cars a thief could gain access to the car and start it directly from the ignition box. I assume that without a fob this wouldn't work on the Honda? I also had a lojack system installed which I assume is not needed for the Clarity trackable with Hondalink? I noted, however, that the Hondalink cannot track a moving car (which lojack can) which may be a downside. I haven't had an opportunity to test the built in alarm system but I assume it works. I will also get the puzzle locks for the wheels mentioned on another post.