Take the Jawa 354/03 motorcycle for a spin in the Invasion mission.

Wanna do some wheelies, Easy Rider? OFP player Hoss says the new motorbike is easy to find in the Resistance campaign's first mission, Invasion

In the first town, where you are dropped off to wait for the bus, just cross the street and go to the backyard behind the apartment complex. There is a friend waiting with the repaired motorcycle. He tells you to take it to the nearest gas station where you will just happen to listen to a radio news broadcast about the invasion.