I'm not sure about the rental income yet. Also, it's my understanding that I can get a tax credit for the purchase of a Hybrid car

I am not sure about your question regarding rental income, would you please be be more specific. 

Regarding the tax credit for the purchase of a Hybrid car....

If you purchased a new vehicle that runs on electricity drawn from a plug-in rechargeable battery, you may be eligible to claim the qualified plug-in electric drive motor vehicle tax credit, which can reduce your tax bill. In order to take the credit, you must file IRS Form 8936 with your return and meet certain requirements.  TurboTax can guide you through this. 

To qualify for the qualified plug-in electric drive motor vehicle tax credit your vehicle purchase must satisfy a number of criteria. First, only qualified vehicles you purchase after December 31, 2009 are eligible for the credit. Your plug-in electric vehicle must also be brand new, made by an eligible manufacturer under the Clean Air Act, have at least four wheels, be appropriate for driving on public streets and highways, and have a weight rating of less than 14,000 pounds. And most importantly, the vehicle must have an electric motor that uses a rechargeable battery to generate at least 4 kilowatt-hours of capacity.

A listing of qualifying vehicles can be found at the IRS website: https://www.irs.gov/businesses/irc-30d-new-qualified-plug-in-electric-drive-motor-vehicle-credit