Does anyone remember the name of this show from the 1980s?

Question

All I remember is part of the opening. A family driving a hatchback car when a earthquake opens the road and they fall in. I thought it was Land of the lost, but that starts with a river ride, or land of the giants, but that stared in 68, not in the 80s, and I am pretty sure the show I am thinking of starts in a...

Answer 1

There was a one season Nickelodeon reboot in 1991.for Land of The Lost.
https://www.youtube.com/watch?v=dmcx0PWP...

Answer 2

This isn't it either, sorry, but your question reminded me of it and you gotta admit it's cool.
https://www.youtube.com/watch?v=FFMuNkse...

UPDATE: googling... that song was written by the same guy who wrote "Killing Me Softly!" Also studied with Lennie Tristano.

UPDATE: sorry, sorry, I'm becoming obsessed with that song. More info here:
https://forums.stevehoffman.tv/threads/d...

And more of that sort of thing here:
https://www.metv.com/lists/12-completely...

Sorry I couldn't answer your question though.

Answer 3

Could it have been Otherworld? That one did involve a family traveling to alternate realities, although I don't recall if there was a car.

If not, you might try the list of 1980s sci fi TV series at https://en.wikipedia.org/wiki/Category:1980s_American_science_fiction_television_series and see if that helps.