Back to Trip and booking Help Articles in this category Difference between KTW and taxi/rental car I had a problem with the ride Cancellation and change Can I book the trip a few days in advance? How do I book a trip? Difference between KTW and taxi/rental car A KTW (ambulance) is a specialized vehicle equipped for the safe transport of sick or injured persons. It has medical facilities and is accompanied by qualified medical personnel. In contrast, cabs and rental cars provide general passenger transportation services without specialized medical equipment or escort. MOXI automatically connects you with the best vehicle adapted to your personal mobility restrictions.