Use can see this sharp edge feature http://www.3dm3.com/tutorials/realsoft3d/car/index3.php
dunno in wich program, is there something like that in blender?
Yes there is,as far as I understood the concept. Right now, speaking of 2.42, you can use Edge Creases via Shift + E (select the edges you want to make sharp first) and set the value to +1.
In 2.43 you can also use the edge split modifier for similar, maybe even better, effects.
Edge split modifier would be good for meshes that don’t need subsurf on. That way you don’t have wasted polys from subsurfing.