We recently had a new concrete drive installed and it looks like in some areas there are 'stretch marks'. Also, there are several areas where there are 'pock' marks and trowel marks. If they were to fill the wholes and grind down the trowel marks will this permanently fix the problem or will it only fix the problem temporarily?
Thank you,

It won't fix the problem doing what you suggest. The entire slab probably needs to be redone. Call up the contractor who performed this work and tell him that his work is inferior and needs to be fixed. Whatever concrete he used was probably "hot" and didn't set up correctly.

There are a few other threads on AMHD about the same thing you are experiencing.