I did the exact same thing once. All my fault. But it was a green light on a highway and some dude in front of me hadnt noticed it was green and was sitting there still after everyone else had sped up and it was rainy like this and I figured he was moving and I had looked down and back up and had about a tenth of a second before impact. Was intense. Airbags, whiplash, months of rehab for a stiff neck. Concussion from the blast. Good thing Mazdas have 5 star front impact. Wear your seatbelt.