Short practice trips work when each one asks only a little more than the last and ends while she is still coping. The ladder below stays in one fixed order; skipping a rung usually shows up as a cat who copes in the driveway and falls apart ten minutes into real traffic.
Stage One and Two: The Parked Car
Start with the carrier in the car with no engine running. Put her usual bedding inside, secure the carrier exactly where it will travel, and let her sit in it in the parked car with a treat, a familiar voice and no expectation of going anywhere. Keep this first session to a few quiet minutes, then bring her back indoors and let the day return to normal. Repeat on another day until she enters the carrier and sits in the car without scanning, calling or trying to escape.
Move to the second stage only when the first looks boring: engine on, without moving. The new elements here are sound and vibration, so keep the session short, speak calmly, reward her, then switch off and go back inside. If she cries, pants or drools at this stage, the answer is more parked sessions, not a drive to get it over with. Cover the carrier the way you intend to cover it on the long journey, or leave it uncovered if that is the real plan, so the practice matches the event in every detail you can control.
Stage Three and Four: Short Drives That Grow
The third stage is a two-minute drive: out of the street and back, or once around the block, ending at home with a treat and a calm release from the carrier. Stay with two-minute drives until her body language on return is much the same as when she left: eating happily, grooming, exploring rather than bolting to hide. A cat who tolerates a drive but then hides for an hour has not passed the stage yet.
Only then move to the fourth stage, drives of ten to fifteen minutes, still ending at home or somewhere pleasant rather than at the vet. Vary the route a little, include the kinds of roads the long journey will use, and watch how she recovers rather than only how she behaves in the car; some cats sit frozen and silent while thoroughly miserable, so appetite, toileting and willingness to enter the carrier next time are part of the score. If she drools, cries or pants throughout even these short runs despite patient repetition, ask a vet for advice before the long trip rather than hoping a longer drive will wear her out.
Keep sessions spaced across days, not stacked into one ambitious afternoon. Learning settles between attempts, and a cat who finished calmly yesterday often starts a rung higher today.
Match Practice to the Real Journey
As the drives lengthen, add the real journey's furniture one piece at a time: the cover position, the person who will sit next to her, the time of day you plan to travel, and the break routine of stopping the car, speaking to her and offering water without lifting her out in unsafe places. Practise loading the car around her too, so bags, voices and closing doors do not arrive as a surprise on the day.
End the programme with a full rehearsal drive that includes a stop and a restart, then a normal evening at home. Note which stage took the most time and which signs told you she was ready to move on; that record helps anyone else who travels with her repeat what worked. The driver collecting her for the long trip can instead open Care Pass via KinsLe, where your stage notes sit inside access limited to those journey days.