Adding parking space to driveway
I've got an odd one here. I'm looking to add a solid-surfaced parking space alongside a concrete driveway, with one end adjoining the street. The space isn't level, rather it gently rolls into a downslope away from the street, although not terribly steep (the existing driveway is poured concrete, if that's any help).
Obviously, I can just hire a driveway contractor to come out and pour something but budget is an object here, as is the fact that I'm a renter (and I do have the landlord's permission to do this), which means that I won't be here forever.
I'd like to avoid gravel due to the slope and the fact that I'll be parking a rare sports car on the proposed space.
So basically, what does anybody recommend for a solid, dependable, affordable do-it-yourself parking pad?