Remember the gas shortages of the 70"s..Siphoning happened all the time,but not to the extent of drilling out the tanks...I think a lot of the Jeep models have plastic tanks??
Gasoline itself is not flammable, gasoline vapor is. That's how they can drill your tank. Still, it's theft and I despise thieves. It won't break my heart to find a charred theif skeleton under the remains of my car.
He that would make his own liberty secure, must guard even his enemy from oppression; for if he violates this duty, he establishes a precedent that will reach to himself.
Thomas Paine