I think interstellar travel is more of a long term project. From their website:
To give a specific example of solar sail speed, LightSail 2’s 32-square-meter sails accelerate it at just 0.058 mm/s². In one month of constant sunlight, the spacecraft’s speed would increase by a total of 549 kilometers per hour, roughly the speed of a jet airliner at cruising speed.
I leave it as a simple exercise to the reader to determine, when it will reach Earth’s escape velocity…
