Consider other humane cat or animal deterrents that do not involve inflicting any kind of harm if these animals are becoming a nuisance.
How can you electrify the body of a car with fence charger to keep cats off?
Electrifying the body of a car with a fence charger for this is dangerous and inhumane to animals and is generally not used, and could have other unexpected or harmful consequences. Additionally, tampering with the electrical system of a car could have other negative unintended impacts on its functionality or safety if not appropriately conducted by a person with the adequate technical capability.