The Coinky Dick

One of the terrorists, a 19 year old named Gabriela Prinsup was like, forget this, I'm going to go get a sandwich. A lot of historians nowadays say that he knew the route the car would take and purposely went there to wait. And meanwhile, the archduke who's understandably peoed, insist on continuing his journey,. They want to change the route for safety purposes, but nobody told the driver. So what happened next, Matt?