Car coitus is an American aberration mostly spawned by warped puritan views that lead to a reality-evading preference of parents to rather not see what is then happening anyway (and smudging car seats)! Is there a developed country with more teenage pregnancies than the US and roomier cars? See, case proven!
Back to the other topic. Other than in this forum of chromespotters, I think most everybody would agree that a modern TBird wouldn't be viewed as outlandish if you stuck it in an early sixties TV show.I think it's a faithful in the spirit of what a TBird is as you can be without being slavish. And sixties and modern TBirds sound more akin than Bicentennials do with either.