Wearing diapers on road trips is a great idea.
If you wear the diapers on the road trip as an ABDL or just because you want to wear a diaper on a road trip you should.
When you wear a diaper on a road trip you can just pee the diaper and not have to wait for a toilet and on some road trips there can be 50 to 100 miles or so between rest stops or gas stations to use the toilet.
Then sometimes a restroom may not be available or it may also be closed.
The diaper is much better anyway as you can just go pee while riding in the vehicle or while driving down the road.
I just pee in the diaper when driving and then change when I can stop and the diaper gets full enough to where it may begin leaking.
The diaper makes the ride more comfortable as well.
I'm an ABDL and yes I wear diapers on a road trip as an ABDL.
I wear diapers all the time and don't use the toilet for either poop or pee as diapers are my toilet.
I find diapers much more comfortable to wear than underwear or boxers and diapers are much more comfier when they are wet and have swelled up due to the SAP getting wet.
Walking around with a wet squishy and saggy diaper is a wonderful feeling.
Sitting in my truck driving with my diaper on and wet makes the ride more comfortable.
I also have a small camper trailer I pull behind my truck and go camping in and when I need to change my diaper I can get into my camper and change the diaper and take a shower if needed.
Wearing diapers on road trips is very fun and convenient as well as there's no need to hold your pee in to go to the toilet.
Just pee the diaper and change later.
Nobody is gonna know you're wearing the diapers anyway.