Not the biggest, but so far the MMN interesanteste Lego Technic model, ....

.... Which I have built so far. At first I could not quite get used to the race car myself, am not a fan. But even when you sort the parts and the first construction the ice was broken, technically simple super to the last detail.
Just as the two sprung axle modules. Front axle with steering and rear axle differential. The car is bigger than expected and can also be fine with drive and steering expand, so that an RC remote control is possible. I do not mean the extension with Lego Power Functions, which is only for opening the doors and the tailgate (you can save MMN). Anyone looking for a guide for the RC extension, which should time googling for 'LEGO Technic 42039 FULL RC Instruction video' that's amazing! I have not implemented anything, but above geschreiben the steering and drive, which is fun!
Have fun and greeting Jochen