Here is a video of a suicide bombing in the heart of the town of al-Bab, as seen on a security camera.
A local police investigation team was able to identify the terrorist, and the fact that his body had an explosive belt, approached the car and it blew up, thankfully only wounding a few people. 

Al-Bab, by the way, was the scene of a terrible car bombing on February 24, 2017, in which dozens of people were killed.

Video source: Social Media