Yes, everything opens...
And yes, I only have 7 in this scale, actually I thought of you when I got this (and a Kyosho BMW that arrived in the same package) - I know how many 1/18 models you have, and I don't understand how you can find the room for them. I mean, just these two are absolutely huge - they came in a box that could have held countless 1/43 models, the Mercedes weighs 1½ kg. Surely you must keep many of them stacked in their boxes or?
I absolutely love 1/18 models (just the carpeting in itself is amazing), but there's no way I could ever find the room for 120 of them!!!
Oh, I better add a photo of a Mercedes-Benz to stay on-topic. This time we're back to 1/43 with this Minichamps Vito (V239) minibus, 2004 - bought for my "modern cars used as taxis"-collection, along with a Sprinter, a Viano and a B-class.