Engine limitations or just a quick demo?

I watched the demo "loop" on wed and like it but a few thing i did not like it.
The level is not destructable.
Water on lake are not animated.
When car cross over water don´t makes spray on car´s back.
Smoke spots of smoe are too small.
Sometimes the camera enters inside a model and show some faces of it.
What are engines limitations or just a quick demo?
What are minimum specs of computer to run that demo?

Thanks for all help

PS:I loved the bird singing detail

which demo loop???

If you don`t like it, you can change all be yourself.

Rei_Ayanami, that showing a car running on a 3d terrain with trees, houses, lake and a vulcan.I will add you on Facebook i hope you acept me.
Widi, of course i can change it, my question is if the engine allows to make better?

Are a very old demo, with the time littles changes come
you check the aum series for see the last change
and appear the ode physics engine is very limited and not
make good job with the cars (flicking all not only the wheels)
however the physx engine will ready early in a week ( post )
and then probably new demos come

Ah, okay, you mean the car example

you can destruct level by changing there vertex only, you will find examples on the aum

the water can be animted via a shader - look on the wiki

the spray is just 15 lines of code to add

about the entering in faces -since this is an old demo, it could be made better now, with physX as an exampele

the game need no high res computers

btw: Are you Carlos Ribeiro(on facebook)?

Thank you Rei_Ayanami, your answer was very usefull.
Yes, i am Carlos Ribeiro