Bus bombings are (relatively) common in some countries. One went off very recently, actually: https://www.theguardian.com/world/2019/may/19/egypt-roadside-bomb-

Bus bombings are (relatively) common in some countries. One went off very recently, actually: https://www.theguardian.com/world/2019/may/19/egypt-roadside-bomb-injures-tourists-near-giza-pyramids-officials-say https://www.theguardian.com/world/2019/may/19/egypt-roadside...