NEW HAVEN — Carolina Bortolleto, an undocumented student from Danbury, came forward Monday to testify, not for herself, but on behalf of her parents, explaining what drivers’ licenses would for mean for them. “Sitting in the back seat I can see my mom shaking and praying if she sees the police behind us. ... ‘Pull over anywhere. Pretend we are stopping for coffee. Pretend we are stopping at this restaurant, because if the police stop us, we are going to be deported,” Bortolleto said of the daily fear they experience just driving to work or to school or the grocery store. “All these basic tasks that you take for granted, are filled with anxiety for me and my family,” said Bortolleto, who is a leader in CT Students for a DREAM. She was one of 2,000 people from around the state who came to Wilbur Cross High School where they filled the auditorium and spilled into the gymnasium and the cafeteria to testify on behalf of proposed legislation that would provide licenses to the undocumented.