What kind of jumping spider is this?

[animalgirl555]

Today I found a weird, shiny jumping spider in my car, and I wanted to know if anyone can identify it. I am thinking about keeping it as well, so if it happens to just be a look-alike (most likely not, as it is displaying the same behaviours, like jumping, that a jumping spider would.) Thanks!

 

[xXTristinaXx]

Where are you located?

 

[animalgirl555]

In Southern California aka, Los Angeles

 

[SpookySpooder]

Better close up shot of any markings or abdomen shape would help.

Sassacus vitis is my best guess based on your photos.