Hi Marcus, these have been challenges for me too! It took me hours and hours to find a way to cramp (complete) minifigs in low 4 wide rides. In addition, it bothers me when there's no room for a steering wheel, so I found a way to get those in there too. I'll give away some of my solutions by uploading a few more pics later. Thanks for your interest!

That's a really cool design, especially the rear window. Great job! :-))

That minifig's position is quite amazing. This does remind me of the Ferrari 456 and the 612.

Fantastic! Nice job getting a mini-fig in there too!

Thank you for the pics! One more question: Is it a whole fig with legs? Sorry I am that curious but these are questions I'm struggling with all the time, so I am keen on new solutions in this field.

There's a minifig in there and it's sitting, trust me. There's a steering wheel too. Every moc I make is in minifig scale, including this one. I'll upload some pics later, showing you how it's done.

Very nice and sleek shaping, there are some great ideas in it! With such a low stance it isn't possible to fit a fig, though. So the fig is probably lying in there? Would be glad to have it in the Minifig Car Group but for that purpose there must be a photo of the fig inside. Anyway great job on this.