Drivers Seat

I wonder if someone could help me.

I am a big person and my girl owns an 2000 Honda Civic, I want to be able to drive the darn thing but I cant fit behind the steering wheel. Is there any way to get the seat back farther than what it is, like extending the tracks. I still want my girl to be able to drive comfortably but also allow me to do the same.

What can I do and how much will it cost?

Thanks