If lasers can exist then Yes, Light drive is possible even today. The laser beams we create today doesn’t disintegrate the source device. If we create a huge array of lasers firing in one direction … When we get thunder lightning we get powerful light. Can we use the same technique for creating fantastic amount of light, Kinda converting matter into direct light ? It is said that the speed of light always remains constant relative to all speeding objects, according to that we may be able to travel faster that speed of light with the help of light drive. That’s because even at 99.99 % speed of light the light drive will be ejecting light at light speed in the opposite direction, Now as the light is being emitting in the other direction there is no question of that light breaking the light speed barrier, hope I am wrong ? If U wana prove if light has mass then : Take a Light Drive, measure its weight, then zoom around the universe, come back and weight the LD again, If light has no mass then there should be no change in weight , what do U think, please correct me ? Nasor: If U think something can exist without being particles then U must also explain how something that is not a particle interacts with a particle ?