"I've recently gotten back into Lego since I became a Dad, and some of my favorite times with my son are when we build together. I am a major car enthusiast, so when the F-40 was announced by Lego I knew I had to have it. It's by far the most involved build we've done, and we both marveled at the intricacies of each part which come together so well.
I had my 4 year old review every step and either place the bricks himself or tell me where they went, and his building skills came a long way during this build. Don't be discouraged by my reported 5 day build time; we savored every moment and tried to make it last as long as we could : )"