Over a thirty-six hour period in Los Angeles, a handful of disparate people's lives intertwine as they deal with the tense race relations that belie life in the city. Among the players are: the Caucasian district attorney, who uses race as a political card; his Caucasian wife, who, having recently been carjacked by two black men, believes that her stereotypical views of non-whites is justified and cannot be considered racism; the two black carjackers who use their race both to their advantage and as an excuse; partnered Caucasian police constables, one who is a racist and uses his authority to harass non-whites, and the other who hates his partner because of those racist views, but who may have the same underlying values in his subconscious; a black film director and his black wife, who believes her husband doesn't support their black background enough, especially in light of an incident with the racist white cop; partnered police detectives and sometimes lovers, one Hispanic female and the other black male, the latter who is dealing with a drugged out mother that feels he isn't concerned enough about taking care of family; an East Asian man who is run over but who is hiding some valuable cargo in the back of his van; a Persian store owner, who feels he isn't getting satisfaction from American society when his store is robbed time and time again; and a Hispanic locksmith, who just wants to keep his family, especially his young daughter, safe in a seemingly unsafe world. 24小时变线人生。“世界警察”的自我反思。life is a crash, all we need is a stronger heart.。明明不是天使。欢迎来到地狱。Maybe Tomorrow。《撞车》撞了什么？。好莱坞的人性探讨。我们彼此碰撞，只是为了感觉到彼此的存在。别把脑子撞坏了。 一个黑人电视导演和他的妻子，莫名其妙地因为莫须有的违章驾驶受到了白人警察的侮辱；看似该受到谴责的警察却在最危急关头挽救了那名曾遭他侮辱的黑人妇女；老实巴交的波斯商店店主，却差点谋杀了有着刺青的墨西哥修锁匠(迈克尔•佩纳Michael Pena饰)；地区检察官（布兰登•费舍尔Brendan Fraser 饰）和他的妻子（桑德拉•布洛克Sandra Bullock饰）被抢吉普车后只能把怨气发泄到无辜的修锁匠身上；黑人警察（唐•钱德尔 Don Cheadle 饰）在承受着上司的威胁和焦急地寻找自己的弟弟。 这一切看似无关的琐事，却在36小时内以一种出人意料的方式绞缠在一起，在这个以暴力，性，金钱闻名的多民族、多文化聚集的大城市—洛杉矶街头一幕幕上演……
