Product came in with assembly instructions and would require 1-2 persons. It would take at least 30mins to an hour to do the installation. Instructions were easy to follow but I'm quite handy so I wouldnt be too sure for others. Toy car seems is made of plastic. I havent tried letting it sit outside in the sun so I cant tell if plastic would warp due to heat. Overall, my nephew had fun doing car wash but then got over it quickly. I was a little disappointed that the wheels were fixed. It would be nice if it rolls like a push toy car.