file size is large so after resigning you need to fix with hashblock calculator or Lefluffie(or whatever you use)<br />
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load save continue the game and you will be in a mission at the docs, Head to Joe's apartment and get the car out of the garage it has 50 miles on it and drive it for about a minute and the achievement will unlock.<br />
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Joe's apartment does not show on the map so if you don't know where it is I included a map.