He was far from crazy. And the town was against him because of the rezoning of nearby property, thus affecting his property. As a result, he became the low man on the totem pole...or even was kicked of it entirely, if you will. The town was against him because they made money from doing so. Don't think he was crazy, eccentric yes, but crazy no. He didn't go after people themselves. He targeted there homes(and only the garages)and business's n' such so that he wouldn't harm anyone. He wanted to cause the same amount of damage to the people that had destroyed his business and livelihood.

And i can't think of a more creative and less-deadly way to incure damage than adding 1 in. thick armor plating to a Large Cat Dozer and taking out the neighbors stuctures. He knew there was no turning back also, and thus ended his own life...but at least he went out w/ a bang (no pun intended).