in relation dun sa pinost ko regarding sa scratch marks sa window ng auto ng sis ko. is there a way to repel these kids from making a playground out of your car?

we have a small garage kasi that can only accomodate 2 vehicles. so the third car stays sa side street in front of our house. yung kids ng neighbors namin love to play sa harap ng bahay namin and they always "trip" on my sis car. would you believe ginawa nila slide yung auto. nasira na nila yung wiper. there are foot marks on the hood and roof. tapos ginagawa face mirror yung side mirror. peste talaga. :x

we thought of putting the car sa kabilang street kaso hirap na baka carnappin naman. any advise? pagalitan mo man, they usually come back when you're not looking.