Cat lost while traveling: at a rest stop, hotel, or from the car
Stay at the exact spot as long as you can, search your own vehicle first, then ask the staff there and report the cat in that county, not at home.
Do not drive away yet
A cat that gets out in a strange place is most likely hiding close to where it got out, so the best thing you can do is stay. Search the car first, then the ground within about 165 feet of the door it left by. That figure comes from a survey of 1,210 missing cats, where the median cat found alive was about that far from the escape point and indoor-only cats were closer still. Those cats were mostly lost from home, not on trips, so treat it as a guide. Practitioner Kat Albrecht calls a cat in unfamiliar territory displaced, and says these cats usually hide in silence near the escape point. Extend your stay by a night if you can. Change your plans before you change your search area.
Check the car before anything else
Many cats that seem to have vanished never left the vehicle. Turn off the engine and open all the doors. Look under every seat and into the seat springs, behind the rear seats, under the dash, in the spare tire well, and under luggage. Take the bags out one at a time and look in each. Then look under the car and in the wheel wells, which veterinarian Liz Stelow names as places cats burrow, and lift the hood with the engine cool. Do not start the engine until you have checked. Keep one door open and stay beside it, with the carrier open on the ground in the shade. If your cat was loose in the car, do this before you tell yourself it got out.
At a rest stop or truck stop
Pin the exact spot on your phone and photograph it, including the mile marker or the exit. Search the edges first: the tree line, culverts, dumpster enclosures, the underside of picnic shelters, and under any parked vehicles. Talk to whoever works there, such as the cleaning crew, the attendant, the fuel desk, or a state welcome center employee. Give them a flyer and a phone number, and ask who empties the bins, since those people will be there tomorrow. Tell truck drivers parked nearby and ask them to check under their rigs before they pull out. Albrecht and Pet FBI both list unintended transport among the things that can happen to a cat, and you do not want it riding away under a trailer.
At a hotel or motel
Search the room as if the cat never left it. Lift the bed skirt, check inside the box spring and behind the headboard, then look at the bathroom vanity, any gap around pipes, the closet shelf, and behind the air conditioner cover. Keep the door closed while you do it. Then tell the front desk, in these words: My cat got out of room 214 at about 8 tonight. Can housekeeping and maintenance check rooms and service closets, and can I see the camera from that hallway? Ask them to hold the room or the one next to it, and to warn housekeeping before they open doors nearby. Ask where the back doors, loading dock and dumpsters are, and search those at night when guests are in bed.
If your cat bolted on a highway
Do not walk the shoulder of a freeway, and do not cross traffic lanes to look. Pull off fully and call the state highway patrol non-emergency number or the local sheriff. Tell them the road, direction, mile marker and that a cat is loose. Then look for a legal, safe place to park, such as the next exit, and search from the far side of the fence along any access road. A cat that runs from traffic will probably head for the nearest cover: a drainage culvert, a tree line, the back of a fence. Our post on a dog on the highway explains who handles road animals and why you should let them.
Report it where the cat is
Your home shelter cannot help here. Work out which county the spot is in, and call that animal control office and each shelter nearby. Humane World for Animals warns that shelters may hold a lost cat for as little as 72 hours, and that a lost cat can take weeks to arrive at one, so ask how you can check from far away. Tell your microchip company the town and that you are traveling. If you do not know which registry has the chip, use the AAHA lookup. Put the town in large type on the flyer, with this line: Visiting from Ohio, calls and texts answered fast. Ask local Facebook and Nextdoor groups to share it.
If you have to leave
Ask the property manager for permission to leave a covered food and water station for a set number of days, and name the date you will remove it. Ask someone local to check it, and leave a motion camera if you have one. Humane World says most animal control agencies and many rescue groups lend humane traps, so ask the local one whether a volunteer would set one for you. Albrecht reports that displaced cats often break cover after several days, commonly 10 to 12, possibly from thirst. That is field experience, not research, but it is a good reason to plan a return trip or keep a helper in place through the second week. Our post on a dog lost while traveling covers remote searches in more depth.
Sources
Huang et al., Animals, 2018: pmc.ncbi.nlm.nih.gov/articles/PMC5789300. Missing Animal Response: missinganimalresponse.com/lost-cat-behavior. Pet FBI: petfbi.org/what-to-do/lost-cat-behavior. CBS News Sacramento: cbsnews.com/sacramento/news/cats-burrowing-in-unsuspecting-drivers-cars-veterinarian-shares-tips-on-how-to-avoid. Humane World for Animals: humaneworld.org/resources/how-find-lost-cat. AAHA microchip lookup: aaha.org/petmicrochiplookup.