passive has nothing to do with SE tax. the rental of personal property (your auto) is subject to SE tax (that's why it goes on Schedule C rather than Schedule E). The rental is a passive activity.
Your health insurance premiums are tax deductible if you have a net profit reported on Schedule C or F. You are also eligible if you’re a general partner, a limited partner receiving guaranteed payments, or a shareholder owning more than 2% of the outstanding stock of an S corporation with wages from the corporation reported on Form W-2. you're also IRA eligible. but the same should be true if you have income from blogging.
