Has anybody traveled 5 hours by car around 32 weeks?

My family lives 5 hours away and wants me to drive in for a baby shower at 32 weeks. I'm 17 weeks and getting very nervous about the idea of worst case scenario having a premature baby 5 hours from home. I will ask my doctor at my next appointment, but I'm curious if anybody else has done a trip like this? How did it go for you?