An on-call doctor visiting patients during the lockdown was left terrified as hooded thugs attacked his car in Paisley.The yobs ordered the frightened medic and his driver to roll down their windows but when they refused they began smashing up the motor.Police revealed the driver was forced to speed off from the onslaught, which happened in Blackstoun Oval, Ferguslie, on Monday night.The rear window of the car was smashed as the yobs threw an item at it as the driver raced to safety.It’s understood the on-call doctor had been visiting a patient in the area and was completing paperwork when the brutes approached.No-one was hurt but both the driver and doctor have been left distressed by the ordeal.Cops investigating the shocking incident,