The airbags of the Audi Q3 that crashed in Bengaluru's Koramangala on Tuesday didn't open as none of its seven passengers were wearing seat belts, police said. The passengers of the speeding car died when it rammed into footpath bollards and crashed into a building's wall. The victims included Tamil Nadu DMK MLA Y Prakash's son Karunasagar and daughter-in-law Bindu.