Traffic Jam
Meanwhile In Threed
On the Road Aagin
Rest Stop
The Dusty Dunes
As you head north, be really careful when fighting the Smilin' Spheres. They will explode at the end of the battle and if you're HP is low enough it can knock out some or all of your party.
If anyone becomes unconscious and you do not have any Cup Of Life Noodles or Horn of Life you will have to walk all the way back to the Threed Hospital to revive them.
Towards the middle of the desert there is an enemy that spawns called the Criminal Caterpillar. If you see one, run after it!
It will be an instant win and you'll get a large amount of experience points. This can be a good way to get some points fast... however sunstroke can really become an issue over time.