FYI: We received a dose of sugar in the gas tank of two of our trucks a couple of weeks ago. Although we can't prove it, we suspect it was the act of an employee we recently terminated. It was a few hundred dollar fix, but the trucks are back up and running. I would highly recommend that you all get yourselves locking gas caps. It's a cheap investment, given the alternative. With competition popping up everyday, it does't take much to disable your trucks for a week or two. Caps are available for approx. $10 to $20 each at any truck center or even Walmart (depending on the type of cap you need).