Being between the front of the bike and the ground isn't hard to imagine if the cyclist is cresting a hill. Assuming the device is 2ft from the ground, and pro

Being between the front of the bike and the ground isn't hard to imagine if the cyclist is cresting a hill. Assuming the device is 2ft from the ground, and projecting an image 10ft out, that'd be mounted at an angle of 79° (with 90° meaning parallel to the ground). If you're coming up a symmetric 5° hill, and the beam goes over the crest, it'll go 115 feet before hitting ground. 6° hill, and it'll not hit ground until the descent ends. (I have no idea where the device is mounted on the bike, or how far in front you'd have to project. Easily could be further up than 2ft, which would help, or further out than 10ft, which would hurt).