NextCar is a complete scam. First, the terms under which we rented through Kayak changed when we arrived: we could not leave the state of FL, had only limited miles, and had to present proof of insurance that was required to be a carrier on their "list". Next, they were *requiring* that we pay for additional insurance from them -- for hundreds of dollars - unless we could show proof of insurance. So, I pulled up our full auto policy on my device and then they changed the story and said that, because our carrier was not on their "approved list", we would still need to buy their insurance. We indicated it was fine and that we would simply dispute the extra "insurance" charge after the fact with our credit card company. They then flat out refused to rent the car to us at all because we said we were planning to dispute the portion of charges not originally agreed to when booking through Kayak. The representative behind the counter was outwardly rude (was mocking me when I began to record so our cancellation, forced by them, didn't come back on us afterwards) and clearly had requirements/quotas/commission with her employer because you could tell this had happened there before and she was fully prepared for an adversarial encounter from second one. At the same time this was happening to us, there was a gentleman to my left with the EXACT SAME issue. Shortly after walking out to go back to the airport to go to a reputable car rental company, another group walked out behind us stating the EXACT SAME thing again! As we shared our stories together with these other groups while waiting to get back to the airport to find another rental, they kept watching all of us from inside as well as a man outside a second entrance with a laptop... just odd and creepy and none of us felt comfortable there at all. Nonestly, this exact thing likely happens dozens of times a week at this place and they are purposefully preying on customers who have been shuttled out to their building that is 15 mins from the airport and have no place else to go, no means to rent another car, no availability of another car, English is not their first language, or they are tired from travelling and will sign and agree to anything. On their best day, this "business" is unscrupulous... but, in reality, it is an actual, real-life, out-in-the-open scam. We have rented cars from various rental companies - some brand name, some very small - all over the world and have NEVER encountered what happened there. It is my strongest recommendation that Kayak never list their company or vehicles ever again... if you do, I am telling you that you are supporting a near-criminal (classic bait and switch) company.