The obvious question...
is, "How may hours per week, average, would you say you leave your garage door open?"
B&E types aren't typically the most meticulous planners. I think it's a lot more likely that the guy leaves his garage open a lot of the time, and the crooks happened to drive by at an opportune moment. They spotted the loot and came back that night to make a withdrawal. But since, apparently, no reporter thought to ask Mr. Rayner this obvious question, I suppose we should just blame Google and be done with it.