Hey i once readed here that someone was wondering how to do wrong side of tracks with nrg-500. I know how ( if its not known ). Sorry king andreas for let you test stuff ( seems its easier as i thought ). I needed test it and i was damn close to mission ( didnt know else you didnt need test ) so here it is. Its very easy just get a nrg-500 ( prolly any vehicle ) and put it in the bombshop ( 8ball, next to 24/7 ). Best is just drive it in but not far ( so its just inside, park it backwards for fast get away else to late = mission failed ). Now start wrong side of tracks and when mission starts hop on sanchez fast with big smoke and get fast to you nrg-500 ( its still in bombshop ). Jump of sanchez and get fast on nrg-500 with smoke and take the normal road ( you take corner ) and now you can get on rail road w/o failing mission. You got plenty time ( since nrg-500 is fast ) and i completed mission in 1 try. Hope this is new and might help people.
Credits to king andreas for helping me try get this to work ( we made it harder as it really is ).