I don't know if I like the idea of lotus as a name. If it were more specific to a particular plant, I might. But if I suppose people take it to be specific to the "sacred lotus flower," maybe that doesn't matter and I can like the idea.
I don't like the look and sound of it. The -us ending is clunky to me because I'm so accustomed to Latin names where -us is masculine and -a is feminine. So it looks a little bit ... not mannish but it looks like the name of a body part, or something, something too fleshy. It's quite possible to overlook that problem that I have with it, if it's someone's name.
The fact that it's a car is a very small problem. (Have you seen a Lotus. Has genital enlargement illusion factor of 13/10 ... equivalent to -3. Blows right past sexy and lands back in nerd territory) Not really something that would bother me if it were someone's name, but it would make me hesitate to use it because I'd worry that others associated cars more strongly than flowers.
And finally, it's new-agey to the point of hippy-dippy. It's like Karma or Soleil, only more up to date and trendy. I don't have a problem with that, but I would get that impression from seeing it used, more than any other impression.
So, nms but not awful, certainly usable if you really like it and wouldn't mind that some people would think it was kinda goofy.