I watched the season finale tonight. Apparently, Lou had a heart attack or anxiety attack and collapsed in his daughter's arm.
I am assuming he is ok. I haven't read any news reports about his demise and they haven't cancelled the series, so I am assuming he is ok. It is a stressful business, especially in Los Angeles, but it is a necessary business.
But our thoughts are with him and his family. May he go back reposing people's cars and still be a TV star.