#1 is having a shit time waiting on car parts which are stopping him from getting away so he bought this today.
About 1/3 through and had left over parts from a step so he had to go back a few pages to find his error.
He left it unaccompanied this afternoon for a few hours when he went out with some mates.
I have much spare lego technic.
He is apparently looking for a missed step. Apparently.