where i get the Automobile designer jobs?

There are very few actual car designer positions, technical degrees in design, cad, 3D visualization and prototype engineering techniques like 3D printing might get you into a support position, you probably need to be a seasoned professional to actually make design decisions.

There may be some backdoor methods to get work doing concept car idea development, like publishing a portfolio of sketches online.

The college/university degree for car design is called Industrial Design. They actually design many products, not just cars. There are very few jobs in automotive design. Companies that do hire automotive designers look for designers that went to the best schools and gained the most relevant experience.

well in CAD modelling softwares.