The Engine Designer Demo was the Best and I would like to know what’s the next demo and how long would it take to be released? 
The next major demo release will be the car designer, so you’ll be able to design engines and put them in cars - that’ll be… 5 - 10 months probably.
But along the way there will be loads of extra content for the engine designer along the way
Cool ! So I heard a patch is comming tomarrow, so what’s in tht patch? Random ques!)
Yup, working on the patch now - It’ll fix a few issues that slipped in, namely: Engines don’t save preview thumbnails of themselves, some of the tutorial videos stop too early, some of the parts descriptions are missing.
Nothing that exciting 
Are we able to design other class cars like convertables,sport cars,sedans,etc… what percentage are you in car designer process 
)
Yes, you will be able to design a wide variety of cars… and in the Car Designer we’re in early alpha stage, still quite a bit to go, but getting there!