Is there any part of the National Seashore that you can drive your car onto and stop/park, like South Padre Island?

There's a road that goes through protected land on both sides, then a parking lot at the end. But no going onto protected land by car or by foot. Rules are in place for a reason.

Oh, you can one time... and you will never do that on any wishlist again. NO...

Yes there is

Not that I'm aware of

No