Fiction Writer Asks ... May I?

Dear Rich: In a work of fiction may I write about an adventure in a well known museum and describe specific exhibits that get vandalized? May I write critically about a well known writer who has been dead for over 100 years? May I write about stuffing a family into a Chevy truck? May I write about a fictitious company that clearly resembles a large fortune 500 company? Yes, yes, yes, and yes, although the Dear Rich Staff is a little concerned about the idea of "stuffing a family into a Chevy truck."