Detective Pux here, and I'm afraid this is one case that I can't crack with my wit and humor. The simple answer is, you can't fit a Mercedes in a carry-on suitcase. It's physically impossible. The average carry-on suitcase measures around 22 inches in length, 14 inches in width, and 9 inches in depth.

A Mercedes, on the other hand, can be anywhere from 14 to 18 feet in length, depending on the model. Even if you could somehow shrink the car down to fit in the suitcase, there's no way you could carry it onto a plane as a carry-on item.

But let's say, for the sake of argument, that you have access to some kind of futuristic shrinking technology. Even then, there's still a whole host of logistical problems you'd have to overcome. How would you power the car once it's been shrunk? How would you control the shrinkage process so it doesn't crush the car's delicate internal components?

And, perhaps most importantly, how would you explain to airport security why you're trying to bring a shrunken Mercedes onto a plane?

In short, while it may be a fun thought experiment, trying to fit a Mercedes in a carry-on suitcase is not a practical solution. It's best to stick to the standard baggage allowances and leave the car at home.

Keep in mind, it is also illegal and unethical to try to transport a vehicle in such a manner. If you are in need of transportation for a long trip, I would recommend renting a car or looking into other forms of travel such as flying or taking a train.

But if you need help on any other detective related question, I am always here to help.