Alternative End
when john from earth 1 travels to earth 2 there will be two john on earth 2
that makes no sense
so before the final scene they should show a scene in earth 2 show the same accident but instead john died
rhoda doesn't won the contest on both earths because this doesn't make sense too as the synchronicity is off
but when john from earth 1 travel to earth 2 he makes rhoda from earth 2 travel to earth 1 so they meet each other as he knew from the car talk scene that she would love to do
then the final scene show them meeting each other