Keep in mind, I'm the resident roadgeek, and am always available.
The map could use a little work. Most cities would have freeways going directly between them, but that's not always the case, especially when a coast is nearby.
Most large cities have a beltway to help get people around easier. Of course, there's always exceptions.
Railways also tend to join in cities, and you would only see a rail line if it's an important corridor that really needed it. Otherwise you'd use mass transit.
I'm not sure how I feel about the airport. I'm not saying it's in a bad spot. Airports usually serve a region like that, but it could be a little closer to one of your large cities, I feel.
If you want me to make a revised map, I'd need a blank copy. I'll keep your stuff in the same spot, just rework the routes.