My wife and I have traveled extensively with our two Corgis (25 lb and 30 lb). We bring their dog beds and have them on the folded down seats right behind us. We keep leashes on the dogs at all times when we travel, just in case. One likes to chase every bird, plane, squirrel, etc. and will almost want to leap out of the car as soon as the door is opened. So, we like to be safe.
One dog will sometimes want to sit in the passenger’s lap to see out better. Bring a cushion with you if you are willing to have them in your lap. The dog’s claws can scratch you even if they are trimmed well. The leash also helps the passenger keep the dog away from the driver.
Do call ahead to confirm that the hotel will accept pets. We’ve had reservations where it was clearly stated on the reservation that it was “pet friendly” only to have the hotel claim that they had recently changed their policy and hadn’t updated their website or their reservation system. It was late and there were no other pet friendly hotels available. They did let us stay but charged a $100 pet fee.
With our two dogs, if we leave them in the room by themselves (which we try not to do) we close all the windows and drapes. Corgis like to bark to alert and the quieter you can make it the less chance that they will bark.
Water, treats and potty breaks are a must. The potty breaks are good times for you to stretch your legs too.
We have a plastic container about 10 by 12 and 16 inches tall with a nice handle that we put all the dog food, bowls, a dog brush, extra treats etc. in. Very convenient when you get to the hotel.
As long as you take breaks for you and the dogs, you are probably the limiting factor on how far you can drive in a day. We’ve done as much as about 700 miles in one day. The dogs were fine, I was bushed.