white smoke coming out of exhaust pipes

I have a 2019 corvette stingray that I purchased in May of 2018.  the car currently has 3,400 miles on it and I have just recently been experiencing white smoke coming out of my exhaust pipes.  It does not happen every time I drive it but occasionally will happen when I accelerate to pass some one.  I have taken it in to the dealership who have corvette certified mechanics.  The did a diagnostic test and check for any leaks but did not find any problems.  They did say that corvettes do on occasion sometimes release white smoke when they are first started up.  Should I be concern or just accept their findings and go on driving the car?  Thank you, John Murphy