The problem is they go with a flag on top showing they are part of a company,till now people knew if someone is part of a company he could pull him over knowing he is not an Arab (all the companies here will never take an Arab)
I'm sorry, but that is utter and complete horse-💩. I've been in Israel for over seven years now, and even before my times, there were
plenty of companies with flags and everything that had Arab drivers. The "Jewish" companies like Bar Ilan and Ramot Alon don't have Arab drivers, but dozens of other companies do. Plus you have plenty of independent drivers (both Jews and Arabs) who do not want to pay the fees required to join a company, but put little flags on their roof or little signs on their windshield that look similar to those of major companies, to fool people into feeling comfortable flagging them down.