Found these built vehicles in my bulk lot - do they belong to a set or are they just someone's creations?

cop car is the only one that I recognize but they're sweet anyway

Those last two look like some modification of the car in this set:

http://www.bricklink.com/catalogItem.asp?S=6561-1

 

And this first one appears to be from this set:

http://www.bricklink.com/catalogItem.asp?S=5958-1

 

The two inlet exhaust and windscreen with wiper patterns give them away.

Those last two look like some modification of the car in this set:

http://www.bricklink.com/catalogItem.asp?S=6561-1

Yeah! HOT ROD CLUB, BABY!

5958 mummy tomb was one of my first, and favorite lego sets.

Thanks! It might be the mummy tomb one, I think I saw a few printed pieces when sorting through everything. Might try to build the whole thing once I get through the sets with instructions.

 

Which set does the cop car belong to?

Thanks! It might be the mummy tomb one, I think I saw a few printed pieces when sorting through everything. Might try to build the whole thing once I get through the sets with instructions.

 

Which set does the cop car belong to?

 

My guess is this one.. http://www.brickset.com/detail/?Set=4436-1