"Building this set was a bit of a challenge for me due to this is my first Technic set. That being said I extremely enjoyed building this set. My son who is four years old loves it. He loves being able to see the pistons moving up and down as he tries to run me over. We have purchased several sets in recent weeks due to the covid19 restrictions, but it has been amazing building and playing with the different sets. We have gotten everything from Star Wars to Marvel. I just really wanted to thank you for putting this set out there for purchase because the entire family loves F&F. Thank you very much to the designers for all the different sets they come out with. It has helped both myself and my son learn some patience.. hats off to Lego"