Sadly, vehicle break-ins are pretty common in Hawai`i and the bad guys have figured out that the base version of the Dodge Charger that is popular with the car rental places is an easy mark:
http://news.yahoo.com/video/honolulu...-27490763.html
Please be warned.
My friendly advice is to never leave anything of any value in the trunk of the car, especially overnight. For certain, do not leave anything unattended and in plain sight.