Would YOU use a built-in toilet on long car journeys?

Would you travel in a car that lets you go on the go?

Imagine you're on a super long car journey. You've got snacks, music, maybe even a pillow... and also a loo, under the seat!

Chinese carmaker Seres has designed a special 'in-vehicle toilet' that can slide out from under a passenger seat.

The idea is simple: if you're travelling for hours, or stuck in traffic, you wouldn't need to stop. Just press a button - or even use your voice - and the toilet appears before any poo or wee does.

According to the company's plans, the loo would have a fan and an exhaust pipe to send bad smells outside.

Waste would be stored in a tank, which someone would have to empty later - not the most glamorous job.

The toilet would also features heating to dry-up urine and other waste.

No cars with this feature have been made yet. It's just a patent for now, which means it's an idea that might - or might not - become real one day in the future.

In the UK, motor vehicle toilets are rare - mostly found in long-distance coaches.

In China, car companies are adding ideas for all sorts of extras to their vehicles.

Some cars already have massage seats, karaoke machines, and even mini fridges.

But the big question is... would YOU actually use a toilet in a car?

Would it be super useful on long journeys - or just too weird and awkward? And whose job would it be to empty the mess?

Let us know what you think in the comments.