What is the motive for the Venice Beach murderer?

[muman613]

Last weekend the news was full of reports of a man who for no apparent reason, and intentionally, drove his car onto the boardwalk at Venice beach. He ended up killing one Italian woman who was visiting for her honey-moon, and injuring up to 20 others who were walking on the boardwalk.

Venice beach was one of my first favorite locations in Southern California and I lived for about 1 year in an apartment one block from the beach. It has always been an area full of crazy people but for the most part they have been civil.

I have not heard what the motive for this attack was. I thought it could have been terrorism, but it doesn't appear to be the case. The culprit turned himself in that evening...