Multiple abandoned vehicles at tax certificate abandoned house in Alabama

[Tyson Begly]

I recently acquired a tax certificate of an abandoned house.  I would like to start renting it out, but there are 7 abandoned vehicles on the property. The lot is not large enough to move them away from the house and still rent it. 

I'm sure I could get someone to tow them, but afraid I would be liable for them if for some reason the property was redeemed.

I've heard you can file for an abandoned title on a car, but not sure how that would work.  I'm also not sure if that would remove my liability for the homes.

Any suggestions for what to do with the cars, without exposing myself to the liability of them?