you must drive 80'000 M to mexico for a cure to the new zombie virus agent 15

At around 65,000 M you know your final safe outpost is coming up, your train has a bit of fuel, should be enough to the seventh outpost

however....

Suddenly you hear bullets strike the back of the sheet metal on your train, it was blocking your main cabin but the outlaw was closing in, it just so happens they attacked you earlier and you shot down the other attackers but ran out of ammo and hid in your main conductor seat and drove off, the outlaw continues to chase, slowly shooting through your sheet metal, your only blockage, luckily the outpost guards will shoot em down if he follows you...