those are Illegal in the U.S. you cannot kill or attempt to kill someone who is trying to vandalize or steal your vehicle. you also cannot rig up any "booby trap" to hurt or kill someone. Ask any cop, they'll tell you the same.
BTW, a guy rigged up a shotgun in his shed, because someone kept breaking in and stealing his stuff. well, the perp showed up again, broke open the door, shotgun went off, killing the perp. the homeowner who rigged up the booby trap received 10 years in prison.

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2001 Ranger Edge 4x4 (sold)
2006 F150 Lariat 4x4 (sold)
2007 Explorer XLT (Destroyed by Deer on highway)
2014 Explorer XLT (inherited from parents)