Hi
I travelled with all mine.
50 or so minutes with DD1 - Left in the very early stages, so was fine. Only had 2 contractions about 30 minutes apart on the way.

Same distance for DD2 - Waited til contractions were too painful to stay at home...as soon as we got ready to go they went from 30 minutes apart to 5 minutes apart! Travelled all the way up, contractions hitting every time we went over a bump...it was hard. Having to sit up in the seat & not being able to move around was hardest.

Lived 2 hours away from the closest hospital with DS, but refused to travel that far in labour, so stayed with MIL a bit over 30 minutes away. Again not very comfortable, & bumps set things off, but I survived! Glad I didn't try doing the 2 hours travel...labour was only 5.

I never worried about not making it. I think I'd go in the back seat next time maybe though (not that there'll be a next time).