Anyone wanting to avoid being caught out by speed cameras can do so very simply — by obeying the speed limits. But physics students have suggested that — theoretically, at least — there may also be another way of avoiding getting a ticket. A group of students found that drivers could escape detection by driving so fast that their number plates would appear invisible to speed cameras. But any drivers tempted to give this a try next time they are on the motorway should be warned; the car would need to be traveling at 119 million miles per hour to make the number plate invisible. This speed equates to one sixth of the speed of light — and no human-made vehicle is capable of going anywhere near this speed.
from Physics News — ScienceDaily http://ift.tt/PYjZii