4 wheels towards sky

This morning it was an accident at the LDP highway (before tol torwards Damasara Perdana). Just right after you turn out from SPK Sunway junction. The whole raod is jam up and I just wonder how come so jam. Saw this green Wira Aeroback turn over and a smash front Hyundai Getz beside. How can this car turn??? Is the Wira drive still alive? Berhati-hati di jalan raya........ Raya sudah hampir......