Shipping a car across country?

Thanks again for all the replies. I should clarify this isn't a cool old car and I'm not going all Vice Grip Garage or now Roadworthy Rescue on this one. It's my dads last car, a 2015 CTS with 50,000 miles. Hopefully it should be good to go...

Whether it's a "cool old car" or Grandpa's Caddy, both you and your boy will still have the priceless memories of your cross-country drive.
If it was me, I'd book the flight for me and my son and not give it a second thought. Make the drive back home, take off-the-interstate routes whenever you can and show the country to your boy along the way.
Oh yeah, any electronic games go in the trunk. Take the time to explore and use the time to talk, teach and learn.
Enjoy!