Wanted this set for a while and I picked it up when there was a recent double points event on. Just got around to building it this past week. Absolutely love this, Not shown but there is a Flux Capacitor in there that has a light brick behind it that looks awesome. I went with Part 3 design as I love the circuit board and think the Mr Fusion looks better than the lightning rod. Mr Fusion has a banana and a drinks can in there to power it. Best part is the mechanic that moves the wheels to the flying position. It's just simple but an amazing effect. and yes, the gull wing doors do open up.