How can I speed up my Traveling time?

Aside from using Energy, you can craft vehicles in order to move faster. Check your Blueprints and to see the what you can use, you should be able to find some vehicles there such as the following:

Chopper

ATV

Zombie Truck

Mi-24

Note: Vehicles will require specific floor types. Check the blueprints to see what floor requirements are needed for your vehicle.