Had 5+ hours at LAX today so I headed to In-N-Out. Caught the Parking Spot shuttle no problem, forgot to time it but it was a short wait. I'd never had an In-N-Out burger before and I have to say it was pretty tasty! No, it wasn't the best burger I'd ever had, but it was by far the best fast food burger. And even with the tip for the shuttle driver a much better deal than airport food. All in all a ^.
The walk back to Terminal 4 took about 30 minutes at a casual pace. It was nice to stretch my legs and enjoy the sunshine.
Thanks to everyone on this thread for the how-to information!