I thought it was awesome. I almost wish it was longer but the ending didn't bother me because it's a basically a mirror of the Breaking Bad ending. It's open ended enough to keep us wondering, but it gives us enough closure to know that Jesse gets a (relatively) happy ending. Both end with him driving away in liberation, but it's a nice contrast to see him driving into safety and isolation versus racing away from torture and likely death. I think as an epilogue it did about the best it could without ruining a near perfect series and as a fan I'm very satisfied.