Fortunately you have the Warranty.
There has been a lot of discussion on the other forums about almost the same condition, meaning a long trip, very low fuel in the tank and the vehicle won't start.
In many cases it ended up being the fuel pump, it's in the gas tank. Apparently the fuel cools the pump and check valve and in a low situation the fuel pump can overheat and fail.
It's something to start checking anyway.