My Voyage To DC

I am a graduate student studying oceanography in Mississippi. The day after the official March for Science in DC date was announced I bought my bus ticket, reserved a space for my dog in the kennel, and took off work. However this week my car broke down and I can no longer get to my bus. I chose a bus from North Carolina even though Im in Mississippi because it was cheaper for me to drive to North Carolina and take a bus from there than a bus from down here. Now my only viable choice is to rent a car. But i cant afford to do that. Please help me.