I booked and paid for a luxury SUV, and was booked a small SUV upon receipt. No way of contacting Kayak rental service to report at time of rental. Once arrived at air port, I had to pay an extra +$250.00 for a Mid-size SUV. We had a party of 6 people. During entire trip we had someone sitting on one’s lap or I the very back of suv, rear access. Whole trip I was concerned that we had one person that was not secured via seat belt. Not sure if this will help matters or any action will be taken by Kayak, but I did feel to express my concerns.