Driving instructors in north Manchester have taken part in a 'slow drive' in memory of a teenager who was killed in a hit and run.Around 25 instructors gathered in their cars for the peaceful protest on Lightbowne Road in Moston - where 14-year-old Mia Strothers lost her life.The school girl had been on her way to North Manchester Academy when she was hit by a speeding BMW at 8.15am on October 5.This week, Kevin Pryce, 45, pleaded guilty to causing the death of the teenager by dangerous