You might be a terrorist if you run over multiple people or bicycle with your vehicle, then get out and stab, shoot, or bludgeon people. But usually authorities will not suspect, or rule out terrorism as a motive if it isn't shouted out.
London 2017 bridge attack
November 2016 Ohio State University Apparent Terrorist Attack November 28, 2016, a car ramming attack and mass stabbing occurred at 9:52 a.m. EST at Ohio State University (OSU)'s Watts Hall
Islamist Terrorist St Cloud MN Crossroad Mall Mass Stabbing Sep 17, 2016 - 10 injured, suspect killed September 17, 2016 Islamist Terrorist St Cloud MN CrossroadMall Mass Stabbing a mass stabbing occurred, he deliberately hit a bicycle on the way to the mall St. Cloud mall attacker before stabbings: 'You won't be seeing me ... star tribune Oct 7, 2016 Adan made his final trip to the gas station, delivering his ominous farewell to the clerk, just before 8 p.m. He returned home briefly, then headed to the mall, just minutes away. Along the way, he hit a cyclist hard enough to send the rider rolling across the hood of his car, but Adan never stopped. Investigators later found the cyclist’s glasses lodged on the car hood.
Haamid Zaid Vehicular Jihad at San Jose Walmart Dec 30, 2013 - March 31, 2013 (Easter Sunday) Haamid Zaid Vehicular Jihad at San Jose WalmartHaamid Ade Zaid lost control and crashed into parked cars ...Vehicular Jihad: Haamid Ade Zaid Muslim plows into Walmart, assaults staff and ... Apr 4, 2013 - sHe then drove through the front of a Walmart store, crashed, got out and ... into a Walmart in San Jose, California and then began clubbing people this Easter. ... Kansas: Muslim driver hits, kills man, drives for three miles with ... Zaid has a history of crazy incidents and previously ran his truck into a car wash. March 31 (Easter Sunday), a Muslim drove his pickup truck through a parking lot in San Jose, California, striking parked cars. He then drove through the front of a Walmart store, crashed, got out and began assaulting shoppers with a blunt object before police arrived and arrested him. Atlas reader FS, "Coverup? Virtually all media outlets are omitting the name of the man who plowed his car into a Walmart in San Jose, California and then began clubbing people this Easter. The man's name is Haamid Ade Zaid
Sunday, June 8, 2008 The Akihabara truck massacre mass murder that took place on , in the Akihabara shopping quarter for electronics, video games, manga and anime in Sotokanda, Chiyoda, Tokyo, Japan. At 12:33. JST, a man drove into a crowd with a truck, eventually killing three people and injuring two; he then stabbed at least 12 people using a dagger (initially reported as a survival knife), killing four people and injuring eight. Tokyo Metropolitan Police Department arrested Tomohiro Katō (加藤 智大 Katō Tomohiro?), 25, on suspicion of attempted murder. The suspect, dressed then in a black T-shirt with a jacket and off-white trousers, was a resident of Susono, Shizuoka. He was held at the Manseibashi Police Station. Two days later on June 10, he was sent to the Tokyo District Public Prosecutor's Office. He was later re-arrested by the police on June 20 on suspicion of murder. Katō was sentenced to death by the Tokyo District Court in 2011, and the sentence was upheld on appeal in 2015.