Car Loan in LLC

[Nadia Bipialaka]

Formed an LLC, prior to applying for business credit, credit score was mid to high 700's. After obtaining about 60k in business credit cards my score fell 100 pts.
My son needs a new car. He has the credit score (800+) he’s a FT student, I’m the sole owner of the LLC is there a way to put the car under the business? Do I add his name to the LLC?

I can’t co-sign with my credit right now. 

Pros and cons. Any advice is greatly appreciated