Hi Claudio,

It depends if you're car has wax/sealant on it or not. If it does then it might be possible to remove it with a tar remover like tar cleanse or tardis on it's own (Available from some of the forum retailers or halfords) but if it wasn't waxed before the paint landed then a detailing clay will make short work of it. If you have neither at the moment then the detailing clay would be your best bet, plus you can clay the rest of the car while you're at it