I have 10,600 miles on my 2014 Kia Sorento EX. I had unit serviced (oil change/tire rotation) Monday AM and drove home (roughly 60miles). Parked vehicle in drive way and ran UVO diagnostic and synched with IPhone App. Stayed parked in driveway for roughly 2.5 hours. My boss met me at my house and I drove about 3 miles and stopped at a red light. After light turned green I accelerated and vehicle wouldn't go over 20mph. It was like I lost power. I turned around and drove home and parked in driveway. We then took bosses truck to meeting which we were now late. Local Kia service was closed by the time we were out of meeting. I took vehicle to Kia Service Tues Am described the above scenario. They kept vehicle for two days and could not duplicate problem. Any suggestions from anyone or has anyone experienced this before? I feel like this is a huge safety issue considering I travel heavily congested interstates about three to four days a week. Can anyone help or give advice.