I have a 2013 Hyundai Sonata with 45,000 miles on it.. Lately it has randomly been losing power. I'll be on the freeway going 70mph and then it'll just start to lose power.. I can usually get it going again by taking my foot off the gas and pushing it a couple times.. It'll also happen even if I'm in my neighborhood going 15mph.. It just randomly happens, but it's scaring me.. I've had it at Hyundai for 2 days and they can't figure it out and have no idea.. Amyone have this problem or know what it could be?? Thank you!