Traveling by cat with cat

ℬ𝓇𝒾𝓉𝓉𝒶𝓃𝓎

Any advice would be appreciated !

My boyfriend and I are driving 9 1/2 hrs down to go see my family and take vacation, we are bringing our cat. The most my cat has ever been in the car is for a trip to the vet. Any advice on how to make the trip comfortable for him. And what should I do about food/water and litter box. I definently don’t want to keep him cooped up in his carrier. Thanks in advance !