It sounds like you have things well under control. Make several copies of your receipts. Don't relinquish control of the originals. If you are contacted by the police, provide them with your documentation and time-line. If you are sued by the tow company, take your original receipts and copies with you to court, and present you time-line and support it with you documents. If you use your time card have it certified as being an accurate business record by your HR department before you go to court.
Disclaimer: I am not offering legal advice. I am just making suggestions for starting points for when you do speak with an attorney. Do NOT rely on anything I write and contact a lawyer.