Sorry for going lowbrow, but can't resist quoting from this Wall Street Journal article on the fraternity of guy who own tanks (your eyes aren't lying):
Scattered around the country are members of a small fraternity of guys who own tanks. They are hyper-avid history buffs or hyper-edgy investors or just wealthy men who can now afford hyper-sized versions of the toys they played with when they were boys. Tank brokers—yes, there is such a thing—estimate there are several hundred to 1,000 private tank owners in the U.S.
"There's always a little boy in the man," says Barbara Bauer, whose husband, Bill Bauer, owns a pristine, 20-ton, World War II Chaffee tank in Port Lavaca.