Been done already ... several times recently. Cars and trucks can be very effective weapons against pedestrians.
Yep
"In March 2006, Mohammed Reza Taheri-azar, an Iranian-born American citizen, confessed to intentionally hitting people with a sport utility vehicle on the campus of the University of North Carolina at Chapel Hill to "avenge the deaths of Muslims worldwide" and to "punish" the United States government. While no one was killed in the attack, nine people were injured (none seriously)."