This is my first-hand experience with the 144001 buggy.  When the buggy leaves the ground, the front part of the buggy swings too much. However, when it runs on the ground, it seems acceptable. It runs fast and straight. Moreover, be sure to use screw glue before the first test run. Otherwise, the wheel may fall due to looseness. I had a small accident. Therefore, I also lost the axle pin. I al so found that one of the pins attached to the wheels bent due to vibration Wltoys RC car  .