Introduction - If you have any usage issues, please Google them yourself
Intelligent vehicles from car ⑴ starting from the starting line (before departure, the body must not exceed the starting line) to reach the finish line to stay after the 10s, and then automatically return to the starting line (allowing reverse return). Round trip time should seek the shortest (the power switch from the car began to close the time). ⑵ automatically record shows a round-trip time.