Wow. First of all congrats on the new family member! Amazing you have *any* time to do *anything!*
Great model and very nice proportions. Nice job!
Here is my 2 cents worth:
Great start. Lack of edge/boundary detail makes it look a bit like a toy car. Focus on the tiny parts, like where the mirror meets the car. The door handles. The details inside the headlights and other lights. Look at existing cars/racecars/ supercars and look at the attention to details that occur between parts and on the edge of parts.
Here are a couple "design" links which might be helpful in understanding edge/boundary and different levels of detail:
