Why didn't James and Lily just apparate when Voldemort tried to kill them?

If they would have escaped Voldy would have found them eventually. And as everyone else said I believe a wand is needed and neither of them had one. Avada Kadavra takes very little time. It was like when you knew you were going to wreck your car and you froze, that's how james died, he had no warning and Voldy wanted it that way, you see voldy is very truly a coward at heart. As for Lily she was too busy running away with her one year old she had little time to think and decided then and there in the nursery she would protect Harry even in death by sacrificing herself so Harry would be able to live. So there really was no escape even if they wanted to they could not.