Bus or car doesn't matter. It's the *contents* that count. You're talking about a bus containing *civilians* versus a car that contained an arms smuggler. And since when is fighting for your survival and defending yourself by killing an arms smuggler a "violation of international law"? Oh, I'm sorry, I forgot, I'm talking to an Israel-hater.
5 tourists rescued from Hebron after being hit by firebomb; 2 hurt (Haaretz)
from the article: Two hurt in missile strike on bus carrying students near Gaza