siff is live off the expresswit >> reporter: stefan, within the last few minutes, 81-year-old isadore adelson succumbed to his injuries, the fifth victim of this horrifying accident. we also learned tonight that the family in that lead car that went flying across the median, they were just taking their 10-year-old to splish splash to celebrate his birthday. they died just miles from their destination. was airborne. carmelo and his 10-year-old son, christopher, killed. his sister, patricia, also killed. >> heartbroken. we're very sad. >> reporter: emotional relatives spoke tonight about their pain. piniellas' girlfriend was in the car in front of theirs. >> all i saw was the car he flew to the other side, the other side of the that's when i stopped to see if everyone was okay. >> reporter: doctors say the wreckage was so shocking even the paramedics were shaken. >> many described it as the worst accident they ever saw. >> reporter: the eastbound car sped out of control near exit 68 then flew into the path of other cars, a honda whose driver was 29-year-old scott martella, suffolk county direct