the fastest speed ever achieved by a man-made vehicle is during the Apollo 10 mission in 1969. The Command Module reached a speed of approximately 39,897 kilometers per hour (24,791 miles per hour) during its return from the Moon.
However, it's important to note that technological advancements and new records are continually being set, so it's possible that there have been developments since then. It's always a good idea to check the latest information from reliable sources or consult updated records to obtain the most current and accurate information on the subject.